[docs] [issue29772] Unintentionally deleted line on library/collections.rst

[Raymond Hettinger]

Raymond Hettinger added the comment:

Nice catch.

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nosy: +rhettinger
resolution:  -> fixed
stage:  -> resolved
status: open -> closed

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue29772>
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