More docs cleanup (#7552)
* More docs improvements.
* timezone: mention which versions of AIX are supported.
(cherry picked from commit 58705d5ac3)
Co-authored-by: Felix Fontein <felix@fontein.de>
* Fixed github_release docs: only module-specific returned key is "tag"
* Update plugins/modules/github_release.py - added a dot
Co-authored-by: Felix Fontein <felix@fontein.de>
Co-authored-by: Felix Fontein <felix@fontein.de>