Merge branch 'dns_resolver-docs-formatting-cleanup'

Bagas Sanjaya says:

====================
dns_resolver docs formatting cleanup

Here are reST cleanups for DNS Resolver Module documentation.
====================

Link: https://patch.msgid.link/20250924020626.17073-1-bagasdotme@gmail.com


Signed-off-by: Jakub Kicinski <kuba@kernel.org>