Merge branch 'aqualls-remove-gitlab-flow-links' into 'master'

Remove links to GitLab Flow document

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/127257



Merged-by: Marcin Sedlak-Jakubowski <msedlakjakubowski@gitlab.com>
Approved-by: Marcin Sedlak-Jakubowski <msedlakjakubowski@gitlab.com>
Co-authored-by: Amy Qualls <aqualls@gitlab.com>