[3.14] gh-123299: Some copyedits to What's New in 3.14 (GH-133622)#133771

hugovk merged 1 commit intopython:3.14python/cpython:3.14from

miss-islington:backport-de28651-3.14miss-islington/cpython:backport-de28651-3.14Copy head branch name to clipboard