[docs] [issue23312] google thinks the docs are mobile unfriendly

[Ned Deily]

Change by Ned Deily <nad at python.org>:


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nosy: +mdk
versions: +Python 3.9 -Python 2.7, Python 3.4, Python 3.5

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue23312>
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