[3.12] docs: module page titles should not start with a link to themselves (GH-117099) (#118791)

docs: module page titles should not start with a link to themselves (GH-117099)
(cherry picked from commit bcb435ee8ff41b5ec5d879ee0b6651f146a66151)

Co-authored-by: Ned Batchelder <ned@nedbatchelder.com>