[docs] [issue23921] Standardize documentation whitespace, formatting

[Roundup Robot]

Roundup Robot added the comment:

New changeset be85897e6d58 by Serhiy Storchaka in branch '2.7':
Issue #23921: Standardized documentation whitespace formatting.
https://hg.python.org/cpython/rev/be85897e6d58

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue23921>
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