[issue43700] Replace Zulip badge with Discourse badge in README

[miss-islington]

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


New changeset 154f86f056c0f68cadd310e68fd2855f9fc9a5a8 by Miss Islington (bot) in branch '3.8':
bpo-43700: Replace Zulip badge with Discourse badge (GH-25141)
https://github.com/python/cpython/commit/154f86f056c0f68cadd310e68fd2855f9fc9a5a8


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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue43700>
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