Akihiro Motoki 7ed0e21bd3 Fix document warnings
Also warning-is-error is set in setup.cfg to avoid future warnings.

Change-Id: I4381a47d35b5736c9af0a2cb8bdd330266825922
2017-04-29 17:32:42 +00:00
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2017-04-29 17:32:42 +00:00
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