gh-149861: Fix rendering of case_block in match statement PEG grammar

[ByteFlowing1337]

This PR fixes #149861.
It also changes capitalization in section headings per https://devguide.python.org/documentation/style-guide/#capitalization

• Issue: The PEG rule "case_block" of match statement seems not rendered correctly #149861

[read-the-docs-community]

Documentation build overview

📚 cpython-previews | 🛠️ Build #32861719 | 📁 Comparing 1d3f673 against main (e56ae81)

  🔍 Preview build  

41 files changed · + 1 added · ± 40 modified

+ Added

• deprecations/pending-removal-in-3.21.html

± Modified

• index.html
• c-api/import.html
• c-api/sentinel.html
• deprecations/index.html
• library/audit_events.html
• library/dataclasses.html
• library/datatypes.html
• library/difflib.html
• library/functions.html
• library/gzip.html
• and 30 more...

[encukou]

Thank you!

Could you undo the case changes? Those aren't related to the issue, and I don't think they're worth making. (AFAIK, even small changes like this can invalidate translations.)

[miss-islington-app]

Thanks @ByteFlowing1337 for the PR, and @encukou for merging it 🌮🎉.. I'm working now to backport this PR to: 3.13.
🐍🍒⛏🤖

[miss-islington-app]

Thanks @ByteFlowing1337 for the PR, and @encukou for merging it 🌮🎉.. I'm working now to backport this PR to: 3.14.
🐍🍒⛏🤖

[miss-islington-app]

Thanks @ByteFlowing1337 for the PR, and @encukou for merging it 🌮🎉.. I'm working now to backport this PR to: 3.15.
🐍🍒⛏🤖

[bedevere-app]

GH-150512 is a backport of this pull request to the 3.13 branch.

[bedevere-app]

GH-150513 is a backport of this pull request to the 3.14 branch.

[bedevere-app]

GH-150514 is a backport of this pull request to the 3.15 branch.