manuals: replace hyphens with em dashes

Fix some hyphens being improperly used as em dashes.
See https://www.grammarly.com/blog/hyphens-and-dashes/

Using em dashes may also allow Sphinx to hyphenate
and break lines in the best way.

Note that the first character after an em dash not
supposed to be capitalized, unless a specific
rule applies, typically when what follows is a proper noun.

Fix a few misuses of parentheses in following text.

(From yocto-docs rev: 5918f019f63f6e820b1168f4cc001faa1d1cdc6f)

Signed-off-by: Michael Opdenacker <michael.opdenacker@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

7 files changed, 29 insertions, 30 deletions

diff --git a/documentation/migration-guides/migration-1.6.rst b/documentation/migration-guides/migration-1.6.rst
index 358086560b..f54d4ba729 100644
--- a/documentation/migration-guides/migration-1.6.rst
+++ b/documentation/migration-guides/migration-1.6.rst
@@ -341,39 +341,39 @@ Removed and Renamed Recipes
 
 The following recipes have been removed:
 
--  ``packagegroup-toolset-native`` - This recipe is largely unused.
+-  ``packagegroup-toolset-native`` --- this recipe is largely unused.
 
--  ``linux-yocto-3.8`` - Support for the Linux yocto 3.8 kernel has been
+-  ``linux-yocto-3.8`` --- support for the Linux yocto 3.8 kernel has been
    dropped. Support for the 3.10 and 3.14 kernels have been added with
    the ``linux-yocto-3.10`` and ``linux-yocto-3.14`` recipes.
 
--  ``ocf-linux`` - This recipe has been functionally replaced using
+-  ``ocf-linux`` --- this recipe has been functionally replaced using
    ``cryptodev-linux``.
 
--  ``genext2fs`` - ``genext2fs`` is no longer used by the build system
+-  ``genext2fs`` --- ``genext2fs`` is no longer used by the build system
    and is unmaintained upstream.
 
--  ``js`` - This provided an ancient version of Mozilla's javascript
+-  ``js`` --- this provided an ancient version of Mozilla's javascript
    engine that is no longer needed.
 
--  ``zaurusd`` - The recipe has been moved to the ``meta-handheld``
+-  ``zaurusd`` --- the recipe has been moved to the ``meta-handheld``
    layer.
 
--  ``eglibc 2.17`` - Replaced by the ``eglibc 2.19`` recipe.
+-  ``eglibc 2.17`` --- replaced by the ``eglibc 2.19`` recipe.
 
--  ``gcc 4.7.2`` - Replaced by the now stable ``gcc 4.8.2``.
+-  ``gcc 4.7.2`` --- replaced by the now stable ``gcc 4.8.2``.
 
--  ``external-sourcery-toolchain`` - this recipe is now maintained in
+-  ``external-sourcery-toolchain`` --- this recipe is now maintained in
    the ``meta-sourcery`` layer.
 
--  ``linux-libc-headers-yocto 3.4+git`` - Now using version 3.10 of the
+-  ``linux-libc-headers-yocto 3.4+git`` --- now using version 3.10 of the
    ``linux-libc-headers`` by default.
 
--  ``meta-toolchain-gmae`` - This recipe is obsolete.
+-  ``meta-toolchain-gmae`` --- this recipe is obsolete.
 
--  ``packagegroup-core-sdk-gmae`` - This recipe is obsolete.
+-  ``packagegroup-core-sdk-gmae`` --- this recipe is obsolete.
 
--  ``packagegroup-core-standalone-gmae-sdk-target`` - This recipe is
+-  ``packagegroup-core-standalone-gmae-sdk-target`` --- this recipe is
    obsolete.
 
 .. _migration-1.6-removed-classes:
diff --git a/documentation/migration-guides/migration-3.0.rst b/documentation/migration-guides/migration-3.0.rst
index 1219edf921..96aea2f332 100644
--- a/documentation/migration-guides/migration-3.0.rst
+++ b/documentation/migration-guides/migration-3.0.rst
@@ -216,11 +216,11 @@ The following sanity check changes occurred.
 -  :term:`SRC_URI` is now checked for usage of two
    problematic items:
 
-   -  "${PN}" prefix/suffix use - Warnings always appear if ${PN} is
+   -  "${PN}" prefix/suffix use --- warnings always appear if ${PN} is
       used. You must fix the issue regardless of whether multiconfig or
       anything else that would cause prefixing/suffixing to happen.
 
-   -  Github archive tarballs - these are not guaranteed to be stable.
+   -  Github archive tarballs --- these are not guaranteed to be stable.
       Consequently, it is likely that the tarballs will be refreshed and
       thus the SRC_URI checksums will fail to apply. It is recommended
       that you fetch either an official release tarball or a specific
diff --git a/documentation/migration-guides/migration-3.1.rst b/documentation/migration-guides/migration-3.1.rst
index e3fdbbe425..cc788efeba 100644
--- a/documentation/migration-guides/migration-3.1.rst
+++ b/documentation/migration-guides/migration-3.1.rst
@@ -200,7 +200,7 @@ Packaging changes
 -----------------
 
 -  ``intltool`` has been removed from ``packagegroup-core-sdk`` as it is
-   rarely needed to build modern software - gettext can do most of the
+   rarely needed to build modern software --- gettext can do most of the
    things it used to be needed for. ``intltool`` has also been removed
    from ``packagegroup-core-self-hosted`` as it is not needed to for
    standard builds.
diff --git a/documentation/migration-guides/migration-3.2.rst b/documentation/migration-guides/migration-3.2.rst
index a376eced52..92b7f91f2c 100644
--- a/documentation/migration-guides/migration-3.2.rst
+++ b/documentation/migration-guides/migration-3.2.rst
@@ -23,7 +23,7 @@ Removed recipes
 The following recipes have been removed:
 
 - ``bjam-native``: replaced by ``boost-build-native``
-- ``avahi-ui``: folded into the main ``avahi`` recipe - the GTK UI can be disabled using :term:`PACKAGECONFIG` for ``avahi``.
+- ``avahi-ui``: folded into the main ``avahi`` recipe --- the GTK UI can be disabled using :term:`PACKAGECONFIG` for ``avahi``.
 - ``build-compare``: no longer needed with the removal of the ``packagefeed-stability`` class
 - ``dhcp``: obsolete, functionally replaced by ``dhcpcd`` and ``kea``
 - ``libmodulemd-v1``: replaced by ``libmodulemd``
@@ -37,7 +37,7 @@ Removed classes
 
 The following classes (.bbclass files) have been removed:
 
--  ``spdx``: obsolete - the Yocto Project is a strong supporter of SPDX, but this class was old code using a dated approach and had the potential to be misleading. The ``meta-sdpxscanner`` layer is a much more modern and active approach to handling this and is recommended as a replacement.
+-  ``spdx``: obsolete --- the Yocto Project is a strong supporter of SPDX, but this class was old code using a dated approach and had the potential to be misleading. The ``meta-sdpxscanner`` layer is a much more modern and active approach to handling this and is recommended as a replacement.
 
 - ``packagefeed-stability``: this class had become obsolete with the advent of hash equivalence and reproducible builds.
 
@@ -46,7 +46,7 @@ pseudo path filtering and mismatch behaviour
 --------------------------------------------
 
 pseudo now operates on a filtered subset of files. This is a significant change
-to the way pseudo operates within OpenEmbedded - by default, pseudo monitors and
+to the way pseudo operates within OpenEmbedded --- by default, pseudo monitors and
 logs (adds to its database) any file created or modified whilst in a ``fakeroot``
 environment. However, there are large numbers of files that we simply don't care
 about the permissions of whilst in that ``fakeroot`` context, for example ${:term:`S`}, ${:term:`B`}, ${:term:`T`},
@@ -68,7 +68,7 @@ structure above that subdirectory. For these types of cases in your own recipes,
 extend :term:`PSEUDO_IGNORE_PATHS` to cover additional paths that pseudo should not
 be monitoring.
 
-In addition, pseudo's behaviour on mismatches has now been changed - rather
+In addition, pseudo's behaviour on mismatches has now been changed --- rather
 than doing what turns out to be a rather dangerous "fixup" if it sees a file
 with a different path but the same inode as another file it has previously seen,
 pseudo will throw an ``abort()`` and direct you to a :yocto_wiki:`wiki page </Pseudo_Abort>`
@@ -137,10 +137,10 @@ DHCP server/client replaced
 
 The ``dhcp`` software package has become unmaintained and thus has been
 functionally replaced by ``dhcpcd`` (client) and ``kea`` (server). You will
-need to replace references to the recipe/package names as appropriate - most
+need to replace references to the recipe/package names as appropriate --- most
 commonly, at the package level ``dhcp-client`` should be replaced by
 ``dhcpcd`` and ``dhcp-server`` should be replaced by ``kea``. If you have any
-custom configuration files for these they will need to be adapted - refer to
+custom configuration files for these they will need to be adapted --- refer to
 the upstream documentation for ``dhcpcd`` and ``kea`` for further details.
 
 
@@ -181,7 +181,7 @@ In addition, the following new checks were added and default to triggering an er
 
 - :ref:`missing-update-alternatives <qa-check-missing-update-alternatives>`: Check if the recipe sets the :term:`ALTERNATIVE` variable for any of its packages, and does not inherit the :ref:`update-alternatives <ref-classes-update-alternatives>` class.
 
-- A trailing slash or duplicated slashes in the value of :term:`S` or :term:`B` will now trigger a warning so that they can be removed and path comparisons can be more reliable - remove any instances of these in your recipes if the warning is displayed.
+- A trailing slash or duplicated slashes in the value of :term:`S` or :term:`B` will now trigger a warning so that they can be removed and path comparisons can be more reliable --- remove any instances of these in your recipes if the warning is displayed.
 
 
 .. _migration-3.2-src-uri-file-globbing:
@@ -209,7 +209,7 @@ deploy class now cleans ``DEPLOYDIR`` before ``do_deploy``
 
 ``do_deploy`` as implemented in the :ref:`deploy <ref-classes-deploy>` class now cleans up ${:term:`DEPLOYDIR`} before running, just as ``do_install`` cleans up ${:term:`D`} before running. This reduces the risk of :term:`DEPLOYDIR` being accidentally contaminated by files from previous runs, possibly even with different config, in case of incremental builds.
 
-Most recipes and classes that inherit the :ref:`deploy <ref-classes-deploy>` class or interact with ``do_deploy`` are unlikely to be affected by this unless they add ``prefuncs`` to ``do_deploy`` *which also* put files into ``${DEPLOYDIR}`` - these should be refactored to use ``do_deploy_prepend`` instead.
+Most recipes and classes that inherit the :ref:`deploy <ref-classes-deploy>` class or interact with ``do_deploy`` are unlikely to be affected by this unless they add ``prefuncs`` to ``do_deploy`` *which also* put files into ``${DEPLOYDIR}`` --- these should be refactored to use ``do_deploy_prepend`` instead.
 
 
 .. _migration-3.2-nativesdk-sdk-provides-dummy:
@@ -303,7 +303,7 @@ now need to be changed to ``inherit image-artifact-names``.
 Miscellaneous changes
 ---------------------
 
-- Support for the long-deprecated ``PACKAGE_GROUP`` variable has now been removed - replace any remaining instances with :term:`FEATURE_PACKAGES`.
+- Support for the long-deprecated ``PACKAGE_GROUP`` variable has now been removed --- replace any remaining instances with :term:`FEATURE_PACKAGES`.
 - The ``FILESPATHPKG`` variable, having been previously deprecated, has now been removed. Replace any remaining references with appropriate use of :term:`FILESEXTRAPATHS`.
 - Erroneous use of ``inherit +=`` (instead of ``INHERIT +=``) in a configuration file now triggers an error instead of silently being ignored.
 - ptest support has been removed from the ``kbd`` recipe, as upstream has moved to autotest which is difficult to work with in a cross-compilation environment.
diff --git a/documentation/migration-guides/migration-3.3.rst b/documentation/migration-guides/migration-3.3.rst
index d65f1c7b1f..aba5c4237c 100644
--- a/documentation/migration-guides/migration-3.3.rst
+++ b/documentation/migration-guides/migration-3.3.rst
@@ -13,11 +13,10 @@ Minimum system requirements
 You will now need at least Python 3.6 installed on your build host. Most recent
 distributions provide this, but should you be building on a distribution that
 does not have it, you can use the ``buildtools-tarball`` (easily installable
-using ``scripts/install-buildtools``) - see
+using ``scripts/install-buildtools``) --- see
 :ref:`ref-manual/system-requirements:required git, tar, python, make and gcc versions`
 for details.
 
-
 .. _migration-3.3-removed-recipes:
 
 Removed recipes
diff --git a/documentation/migration-guides/migration-3.4.rst b/documentation/migration-guides/migration-3.4.rst
index 8db43a1454..c55c0b8c3c 100644
--- a/documentation/migration-guides/migration-3.4.rst
+++ b/documentation/migration-guides/migration-3.4.rst
@@ -146,7 +146,7 @@ Virtual runtime provides
 ~~~~~~~~~~~~~~~~~~~~~~~~
 
 Recipes shouldn't use the ``virtual/`` string in :term:`RPROVIDES` and
-:term:`RDEPENDS` - it is confusing because ``virtual/`` has no special
+:term:`RDEPENDS` --- it is confusing because ``virtual/`` has no special
 meaning in :term:`RPROVIDES` and :term:`RDEPENDS` (unlike in the
 corresponding build-time :term:`PROVIDES` and :term:`DEPENDS`).
 
@@ -171,7 +171,7 @@ Extensible SDK host extension
 For a normal SDK, some layers append to :term:`TOOLCHAIN_HOST_TASK`
 unconditionally which is fine, until the eSDK tries to override the
 variable to its own values. Instead of installing packages specified
-in this variable it uses native recipes instead - a very different
+in this variable it uses native recipes instead --- a very different
 approach. This has led to confusing errors when binaries are added
 to the SDK but not relocated.
 
diff --git a/documentation/migration-guides/release-notes-3.4.rst b/documentation/migration-guides/release-notes-3.4.rst
index 5a8fb4b5a9..323e4df7ae 100644
--- a/documentation/migration-guides/release-notes-3.4.rst
+++ b/documentation/migration-guides/release-notes-3.4.rst
@@ -5,7 +5,7 @@ New Features / Enhancements in 3.4
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 -  Linux kernel 5.14, glibc 2.34 and ~280 other recipe upgrades
--  Switched override character to ':' (replacing '_') for more robust parsing and improved performance - see the above migration guide for help
+-  Switched override character to ':' (replacing '_') for more robust parsing and improved performance --- see the above migration guide for help
 -  Rust integrated into core, providing rust support for cross-compilation and SDK
 -  New create-spdx class for creating SPDX SBoM documents
 -  New recipes: cargo, core-image-ptest-all, core-image-ptest-fast, core-image-weston-sdk, erofs-utils, gcompat, gi-docgen, libmicrohttpd, libseccomp, libstd-rs, perlcross, python3-markdown, python3-pyyaml, python3-smartypants, python3-typogrify, rust, rust-cross, rust-cross-canadian, rust-hello-world, rust-llvm, rust-tools-cross-canadian, rustfmt, xwayland