[docs] [issue36007] python3.8 a1 - docs build requires sphinx 1.7 but uses a 1.8 feature

[Mariatta Wijaya]

Mariatta Wijaya <mariatta at python.org> added the comment:

Let's up the sphinx version. 
Thanks.

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nosy: +Mariatta

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue36007>
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