[issue46104] Reduce use of old-style syntax in typing docs

[miss-islington]

miss-islington <mariatta.wijaya+miss-islington at gmail.com> added the comment:


New changeset 8e4564d14ae0fc97cfea4de9e271468d4c28a6fe by Miss Islington (bot) in branch '3.9':
[3.9] bpo-46104: Fix example broken by GH-30148 (GH-30203) (GH-30210)
https://github.com/python/cpython/commit/8e4564d14ae0fc97cfea4de9e271468d4c28a6fe


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<https://bugs.python.org/issue46104>
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