Merge topic 'Help-OPTIMIZE_DEPENDENCIES-fixes' into release-4.2

02805028bd HELP/OPTIMIZE_DEPENDENCIES: fix reST markup
c40f3b984b Help/OPTIMIZE_DEPENDENCIES: fix parity of which files are considered

Acked-by: Kitware Robot <kwrobot@kitware.com>
Reviewed-by: Craig Scott <craig.scott@crascit.com>
Merge-request: !11336