[issue20285] Improve object.__doc__ and help(object) output

[Terry J. Reedy]

Change by Terry J. Reedy <tjreedy at udel.edu>:


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assignee: docs at python -> terry.reedy
components: +Library (Lib)
stage: patch review -> commit review
versions: +Python 3.6, Python 3.8

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue20285>
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