[docs] [issue12633] sys.modules doc entry should reflect restrictions

[Éric Araujo]

Éric Araujo <merwok at netwok.org> added the comment:

The note’s spirit is good, but I think something more concise would do.

Side note: Please don’t mix up unrelated cosmetic changes in your diffs.

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nosy: +eric.araujo

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue12633>
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