[3.12] Docs: Use 'f-strings' as header (GH-112888) (#112923)

Docs: Use 'f-strings' as header (GH-112888)
(cherry picked from commit 5bf7580d72259d7d64f5ee8cfc2df677de5310a4)

Co-authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com>