We had a few instances where the title level used for calls in the
api-ref was wrong, resulting in the api call being hidden inside the
details of another title level.
This fixes title levels to be consistent and adds a missing inclusion to
the v2 index.
Closes-bug: #1787203
Change-Id: I602250117dbf52f9e031e945040b45f089d8602e
Signed-off-by: Sean McGinnis <sean.mcginnis@gmail.com>