Adding check that **all** setup.py README's are valid RST. (#3318)
Adding check that **all** setup.py README's are valid RST. (#3318)

* Adding check that **all** setup.py README's are valid RST.

Follow up to #3316. Fixes #2446.

* Fixing duplicate reference in Logging README.

* Fixing duplicate reference in Monitoring README.

googleapis/python-language,googleapis/python-language