Merge branch 'waldyrious-master-patch-92041' into 'master'

Add examples of timestamps in the Predefined Variables reference

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/136767



Merged-by: Marcel Amirault <mamirault@gitlab.com>
Approved-by: Marcel Amirault <mamirault@gitlab.com>
Co-authored-by: Waldir Pimenta <waldyrious@gmail.com>