[docs] [issue18553] os.isatty() is not Unix only

[Roundup Robot]

Roundup Robot added the comment:

New changeset 2b7f11ba871c by Senthil Kumaran in branch '3.3':
Correcting the mistake in 14ba90816930
http://hg.python.org/cpython/rev/2b7f11ba871c

New changeset e839e524a7d5 by Senthil Kumaran in branch 'default':
Correcting the mistake in 678e3c0d2d99
http://hg.python.org/cpython/rev/e839e524a7d5

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue18553>
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