[3.14] Docs: don't rely on implicit 'above' directions in socket docs (GH-146426) (#146560)

Docs: don't rely on implicit 'above' directions in socket docs (GH-146426)
(cherry picked from commit 3ff582238fda913691734245416eaa1a18c7ca0e)

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