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

[Roundup Robot]

Roundup Robot added the comment:

New changeset 8a40bc71c072 by Senthil Kumaran in branch '3.2':
Fix issue #15899: Make the unicode.rst doctests pass. Patch by Chris Jerdonek.
http://hg.python.org/cpython/rev/8a40bc71c072

New changeset 1d9e89f6abec by Senthil Kumaran in branch 'default':
merge.  Fix issue #15899: Make the unicode.rst doctests pass. Patch by Chris Jerdonek.
http://hg.python.org/cpython/rev/1d9e89f6abec

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nosy: +python-dev

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