[docs] [issue36960] Make datetime docs more user-friendly

[Paul Ganssle]

Change by Paul Ganssle <p.ganssle at gmail.com>:


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resolution:  -> fixed
stage:  -> resolved
status: open -> closed
versions: +Python 3.9 -Python 3.8

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue36960>
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