[docs] [issue23005] typos on heapq doc

[Roundup Robot]

Roundup Robot added the comment:

New changeset cb085b07ea34 by Raymond Hettinger in branch '2.7':
Issue 23005: Fix typos
https://hg.python.org/cpython/rev/cb085b07ea34

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nosy: +python-dev

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue23005>
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