Sync whatsnew with the edit I made in the 3.12 backport PR. (#109807)

A post main merge edit to the text was added in the 3.12 backport PR.
  https://github.com/python/cpython/pull/109773/commits/e38d7104b8f245e5db6d487932c44edf0d2c4762

This includes that in main.  It's a minor edit over #109767 to resolve the comment there.