This  enforce a minimal formatting consistency for the documentation. The
description and returns missing for a few helpers have also been added.
Signed-off-by: NUsama Arif <usama.arif@bytedance.com>
Signed-off-by: NAndrii Nakryiko <andrii@kernel.org>
Reviewed-by: NQuentin Monnet <quentin@isovalent.com>
Link: https://lore.kernel.org/bpf/20220119114442.1452088-2-usama.arif@bytedance.com