[issue47126] Update to canonical PEP URLs

[Hugo van Kemenade]

Change by Hugo van Kemenade <hugovk+python at gmail.com>:


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keywords: +patch
pull_requests: +30203
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/32124

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue47126>
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