[docs] [issue32769] Add 'annotations' to the glossary

Ivan Levkivskyi <levkivskyi@gmail.com> added the comment: Maybe we can consider backporting this to 3.7? Andrés, if you think it makes sense, you can cherry-pick the commit and open a PR against 3.7 branch. ---------- _______________________________________ Python tracker <report@bugs.python.org> <https://bugs.python.org/issue32769> _______________________________________