[docs] [issue33459] Fix "tuple display" mention in Expressions

[Andrés Delfino]

Andrés Delfino <adelfino at gmail.com> added the comment:

I'm restoring the original title since we are not sure it was incorrect after all.

I have also updated the PR to remove the tuple display entry from the index.

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title: Define "tuple display" in the docs -> Fix "tuple display" mention in Expressions
versions: +Python 2.7, Python 3.6, Python 3.7

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue33459>
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