docs: watchdog: convert docs to ReST and rename to *.rst

Convert those documents and prepare them to be part of the kernel
API book, as most of the stuff there are related to the
Kernel interfaces.

Still, in the future, it would make sense to split the docs,
as some of the stuff is clearly focused on sysadmin tasks.

The conversion is actually:
  - add blank lines and identation in order to identify paragraphs;
  - fix tables markups;
  - add some lists markups;
  - mark literal blocks;
  - adjust title markups.

At its new index.rst, let's add a :orphan: while this is not linked to
the main index.rst file, in order to avoid build warnings.

Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/Documentation/kernel-per-CPU-kthreads.txt b/Documentation/kernel-per-CPU-kthreads.txt
index 23b0c8b20cd1..5623b9916411 100644
--- a/Documentation/kernel-per-CPU-kthreads.txt
+++ b/Documentation/kernel-per-CPU-kthreads.txt
@@ -348,7 +348,7 @@ To reduce its OS jitter, do at least one of the following:
 2.	Boot with "nosoftlockup=0", which will also prevent these kthreads
 	from being created.  Other related watchdog and softlockup boot
 	parameters may be found in Documentation/admin-guide/kernel-parameters.rst
-	and Documentation/watchdog/watchdog-parameters.txt.
+	and Documentation/watchdog/watchdog-parameters.rst.
 3.	Echo a zero to /proc/sys/kernel/watchdog to disable the
 	watchdog timer.
 4.	Echo a large number of /proc/sys/kernel/watchdog_thresh in