[docs] [issue10536] Enhancements to gettext docs

[Serhiy Storchaka]

Change by Serhiy Storchaka <storchaka+cpython at gmail.com>:


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stage: resolved -> 
status: closed -> open
versions: +Python 3.6, Python 3.7 -Python 3.4, Python 3.5

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue10536>
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