lingyongxu d7229a124f Fix some reST field lists in docstrings
Probably the most common format for documenting arguments is reST field
lists [1]. This change updates some docstrings to comply with the field
lists syntax.
[1] http://sphinx-doc.org/domains.html#info-field-lists

Change-Id: Ifa8c0db3efc03eac3b034ef642aaa8fce514a66e
2017-09-07 05:42:45 +00:00
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