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, 3 insertions, 3 deletions

diff --git a/documentation/ref-manual/images.rst b/documentation/ref-manual/images.rst
index 31fb567687..4b771d0601 100644
--- a/documentation/ref-manual/images.rst
+++ b/documentation/ref-manual/images.rst
@@ -78,11 +78,11 @@ Following is a list of supported recipes:
    libraries you can use in a host development environment.
 
 -  ``core-image-minimal-initramfs``: A ``core-image-minimal`` image that
-   has the Minimal RAM-based Initial Root Filesystem (initramfs) as part
+   has the Minimal RAM-based Initial Root Filesystem (:term:`Initramfs`) as part
    of the kernel, which allows the system to find the first "init"
    program more efficiently. See the
    :term:`PACKAGE_INSTALL` variable for
-   additional information helpful when working with initramfs images.
+   additional information helpful when working with :term:`Initramfs` images.
 
 -  ``core-image-minimal-mtdutils``: A ``core-image-minimal`` image that
    has support for the Minimal MTD Utilities, which let the user
@@ -121,7 +121,7 @@ Following is a list of supported recipes:
    section in the Yocto Project Development Tasks Manual.
 
 -  ``core-image-testmaster-initramfs``: A RAM-based Initial Root
-   Filesystem (initramfs) image tailored for use with the
+   Filesystem (:term:`Initramfs`) image tailored for use with the
    ``core-image-testmaster`` image.
 
 -  ``core-image-weston``: A very basic Wayland image with a terminal.