[docs] [issue29974] Change typing.TYPE_CHECKING doc example

[Berker Peksag]

Berker Peksag added the comment:


New changeset 87c07fe9d908d0a2143fcc8369255c6ff3241503 by Berker Peksag (Mathias Rav) in branch 'master':
bpo-29974: Improve typing.TYPE_CHECKING example (GH-982)
https://github.com/python/cpython/commit/87c07fe9d908d0a2143fcc8369255c6ff3241503


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nosy: +berker.peksag

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