MOTOR-117 Warn about docs that should be rewritten.
MOTOR-117 Warn about docs that should be rewritten.

Any Motor coroutine whose docstring we pull verbatim from PyMongo, if it
contains a literal block, probably shows synchronous code and should be
rewritten to use "yield" or "await".

Warn about these methods during sphinx-build.

mongodb/motor,wujuguang/motor,wujuguang/motor,mongodb/motor