[issue21063] Touch up one-line descriptions of modules for module index

[Angad Singh]

Angad Singh added the comment:

Not a lot of occurrences if I only look at the synopsis. Attaching a diff.
Also saw a weird "This subpackage" in apiref.rst line 1767. Fix that too?

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keywords: +patch
Added file: http://bugs.python.org/file34639/this_module_doc_fix.patch

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<http://bugs.python.org/issue21063>
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