[docs] [issue15899] howto/unicode.rst doctest corrections

[Roundup Robot]

Roundup Robot added the comment:

New changeset 142fbadd0ae1 by Senthil Kumaran in branch '2.7':
Fix issue #15899 -  howto/unicode.rst doctest corrections for 2.7 branch.
http://hg.python.org/cpython/rev/142fbadd0ae1

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue15899>
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