manuals: simplify references to the BitBake User Manual

- Replacing
  :ref:`bitbake:bitbake-user-manual/...`
  by :ref:`bitbake-user-manual/...`

  Adding "bitbake:" as a prefix is not necessary
  as there is no naming conflict between the YP
  and the BitBake manuals (all documents are in
  "bitbake-user-manual/")

- Explaining the rules in the README file

- When necessary, fixing line length in the modified paragraphs.

(From yocto-docs rev: d80b31705450cfb98d217ea44ba2edace2d64095)

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

1 files changed, 1 insertions, 1 deletions

diff --git a/documentation/migration-guides/migration-3.4.rst b/documentation/migration-guides/migration-3.4.rst
index 076c589c8c..a80d43a86b 100644
--- a/documentation/migration-guides/migration-3.4.rst
+++ b/documentation/migration-guides/migration-3.4.rst
@@ -45,7 +45,7 @@ would now become::
    BB_TASK_NICE_LEVEL:task-testimage = '0'
 
 This also applies to
-:ref:`variable queries to the datastore <bitbake:bitbake-user-manual/bitbake-user-manual-metadata:functions for accessing datastore variables>`,
+:ref:`variable queries to the datastore <bitbake-user-manual/bitbake-user-manual-metadata:functions for accessing datastore variables>`,
 for example using ``getVar`` and similar so ``d.getVar("RDEPENDS_${PN}")``
 becomes ``d.getVar("RDEPENDS:${PN}")``.