[docs] [issue23929] Minor typo (way vs. away) in os.renames docstring

[Eric V. Smith]

Eric V. Smith added the comment:

I think removing the word "way" would be a better improvement.

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nosy: +eric.smith
versions:  -Python 3.2, Python 3.3, Python 3.6

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<http://bugs.python.org/issue23929>
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