net: dns_resolver: Move dns_query() explanation out of code block

Documentation for dns_query() is placed in the function's literal code
block snippet instead. Move it out of there.

Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250924020626.17073-3-bagasdotme@gmail.com


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