[docs] [issue17586] fix typo in contextlib.rst

[Tshepang Lekhonkhobe]

Changes by Tshepang Lekhonkhobe <tshepang at gmail.com>:


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assignee: docs at python
components: Documentation
files: typo.diff
keywords: patch
nosy: docs at python, tshepang
priority: normal
severity: normal
status: open
title: fix typo in contextlib.rst
versions: Python 3.4
Added file: http://bugs.python.org/file29619/typo.diff

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue17586>
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