Merge branch 'documentation-fixes-for-dpll-subsystem'

Bagas Sanjaya says:

====================
Documentation fixes for dpll subsystem

Here is a mini docs fixes for dpll subsystem. The fixes are all code
block-related.

This series is triggered because I was emailed by kernel test robot,
alerting htmldocs warnings (see patch [1/2]).

[1]: https://lore.kernel.org/all/20230918093240.29824-1-bagasdotme@gmail.com/
====================

Link: https://lore.kernel.org/r/20230928052708.44820-1-bagasdotme@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>