manuals: improve initramfs details

- Create a new entry in the glossary
- Add implementation details
- Replace the mention of "init ramdisk" by "initramfs¨
  whenever possible
- Remove obsolete and duplicate information
- Fix spacing issues in the Sphinx code

(From yocto-docs rev: 952c7e6dee49532705b2c162f4728e635c38df3f)

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

1 files changed, 4 insertions, 4 deletions

diff --git a/documentation/dev-manual/qemu.rst b/documentation/dev-manual/qemu.rst
index 88a63c1808..9f4bc264a3 100644
--- a/documentation/dev-manual/qemu.rst
+++ b/documentation/dev-manual/qemu.rst
@@ -123,9 +123,9 @@ available. Follow these general steps to run QEMU:
 
          $ runqemu qemux86-64 core-image-minimal ext4
 
-   -  This example specifies to boot an initial RAM disk image and to
-      enable audio in QEMU. For this case, ``runqemu`` set the internal
-      variable ``FSTYPE`` to "cpio.gz". Also, for audio to be enabled,
+   -  This example specifies to boot an :term:`Initramfs` image and to
+      enable audio in QEMU. For this case, ``runqemu`` sets the internal
+      variable ``FSTYPE`` to ``cpio.gz``. Also, for audio to be enabled,
       an appropriate driver must be installed (see the previous
       description for the ``audio`` option for more information).
       ::
@@ -394,7 +394,7 @@ command line:
    options are basically identical. If you do not provide a MACHINE
    option, ``runqemu`` tries to determine it based on other options.
 
--  ``ramfs``: Indicates you are booting an initial RAM disk (initramfs)
+-  ``ramfs``: Indicates you are booting an :term:`Initramfs`
    image, which means the ``FSTYPE`` is ``cpio.gz``.
 
 -  ``iso``: Indicates you are booting an ISO image, which means the