Merge branch '411901_update_docs' into 'master'

Update push rules documentation

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/121864



Merged-by: Amy Qualls <aqualls@gitlab.com>
Approved-by: Amy Qualls <aqualls@gitlab.com>
Co-authored-by: Vasilii Iakliushin <viakliushin@gitlab.com>