Merge branch 'himkp-fix-comment-templates-newlines' into 'master'

Fix newlines in multiline comment templates

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/125160



Merged-by: Phil Hughes <me@iamphill.com>
Approved-by: Phil Hughes <me@iamphill.com>
Co-authored-by: Himanshu Kapoor <hkapoor@gitlab.com>