[docs] [issue7057] tkinter doc: more 3.x updates

Change by Irit Katriel <iritkatriel@yahoo.com>: ---------- versions: +Python 3.10, Python 3.8, Python 3.9 -Python 3.1, Python 3.2 _______________________________________ Python tracker <report@bugs.python.org> <https://bugs.python.org/issue7057> _______________________________________