move API docs downwards

move API docs downwards

Sphinx 5.3 (compared to 5.1.1) is now putting all the autodoc
names into the TOC.   So we have to start being more careful
to make sure API docs are well below narrative docs, because
this new style is a wall of text.   i dont yet see any options
to turn it off, but it does seem like a good improvement, just makes
doc organization a more difficult endeavor.

Change-Id: I49428076fef9b96ef1544621de9a9dfca1699dab
(cherry picked from commit b3e1fe7577efa799821a1e3ab6321d712fbfaab6)