[docs] [issue15231] update PyPI upload doc to say --no-raw passed to rst2html.py

[Eli Bendersky]

Eli Bendersky added the comment:

My job is done here. Éric - assigning to you for distutils2, once it becomes relevant.

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assignee: docs at python -> eric.araujo

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue15231>
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