[3.11] Docs: clean up Argument Clinic howto's (#107797)#107800

erlend-aasland merged 1 commit intopython:3.11python/cpython:3.11from

erlend-aasland:backport-3.11-doc-fix-clinicerlend-aasland/cpython:backport-3.11-doc-fix-clinicCopy head branch name to clipboard