[docs] [issue26511] Add link to id() built-in in comparison operator documentation for "is"

[Martin Panter]

Martin Panter added the comment:

Please don’t use nested brackets like that in English text. Try to rewrite the sentence without brackets (e.g. use a comma or say “This is equivalent to”) [or use a different kind of bracket if you really must (to make the nesting clearer)].

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nosy: +martin.panter

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue26511>
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