[docs] [issue34293] DOC: Makefile inherits a Sphinx 1.5 bug regarding PAPER envvar

[Zachary Ware]

Zachary Ware <zachary.ware at gmail.com> added the comment:

Thank you for the patch!

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resolution:  -> fixed
stage: patch review -> resolved
status: open -> closed
versions: +Python 3.7, Python 3.8, Python 3.9

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue34293>
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