docs: Update RCU cross-references as suggested in doc-guide

The RCU documentation contains old-style cross references which
do not follow the best practices outlined in doc-guide/sphinx.rst.
In addition, some of the cross references use URLs that should be replaced
by pathnames.

Update all of these cross references and adjust the surrounding words.

Summary of changes:

  - out-of-date plaintext file names (*.txt) -> *.rst
  - references by :ref: tags -> path names of *.rst
    * use relative paths to .rst files under the RCU/ subdirectory
    * use abs paths of Documentation/xxx for other .rst files
  - references by URL under https://www.kernel.org/ -> paths of *.rst
  - adjust surrounding words of some of updated references.

Note:
  The automarkup.py script interprets references via "*.txt" as if they
were via "*.rst", so the *.txt -> *.rst changes should be regarded as
cleanups rather than bug fixes.

Cc: [email protected]
Cc: [email protected]
Tested-by: Bagas Sanjaya <[email protected]>
Reviewed-by: Steven Rostedt (Google) <[email protected]>
Signed-off-by: Akira Yokosawa <[email protected]>
Signed-off-by: Paul E. McKenney <[email protected]>

0 files changed, 0 insertions, 0 deletions