Merge branch 'mg-fix-plaintext-request-new-review-mail-20231129' into 'master'

Fix link in plain-text re-request MR review mails

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/138210



Merged-by: Lukas 'Eipi' Eipert <leipert@gitlab.com>
Approved-by: Lukas 'Eipi' Eipert <leipert@gitlab.com>
Co-authored-by: Manuel Grabowski <mgrabowski@gitlab.com>