Adjust the subject and commit message body line length limits to 72
characters to match the commit message linter.
- Each commit message should have a single-line subject line followed by verbose
description after an empty line
-- Limit the subject line to 67 characters, and the rest of the commit message
-to 76 characters
+- Limit the subject and commit message body lines to 72 characters
- Use subject line prefixes for commits that affect a specific portion of the
code; examples include "Upstream:", "QUIC:", or "Core:"; see the commit history