Duan Jiong 470d76d138 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: I2f48183114b0f41dd9da18b7244219772844391c
2017-03-23 13:44:24 +08:00
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