Merge branch 'tmike-docs-obsolete-reword' into 'master'

Improve phrasing for obsolete pending migration docs

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/122854



Merged-by: Ashraf Khamis <akhamis@gitlab.com>
Co-authored-by: Michael Trainor <mtrainor@gitlab.com>