[docs] [issue30380] Sphinx 1.6.1 raising new warnings in docs build

[Serhiy Storchaka]

Serhiy Storchaka added the comment:


New changeset b8b9f95f660d00ce9bd11bd9de429176858be3c5 by Serhiy Storchaka in branch '2.7':
[2.7] bpo-30380: Fix Sphinx 1.6.1 warnings. (GH-1613) (#1616)
https://github.com/python/cpython/commit/b8b9f95f660d00ce9bd11bd9de429176858be3c5


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