[docs] [issue23702] docs.python.org/3/howto/descriptor.html still refers to "unbound methods"

[Raymond Hettinger]

Changes by Raymond Hettinger <raymond.hettinger at gmail.com>:


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dependencies:  -Wrong function calls and referring to not removed concepts in descriptor HowTo (documentation)

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue23702>
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