Merge branch 'docs/restart-psql-can-resume-replication' into 'master'

Mention restarting PSQL can resume replication

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/137938



Merged-by: Achilleas Pipinellis <axil@gitlab.com>
Co-authored-by: Anton Smith <asmith@gitlab.com>