[docs] [issue34154] Tkinter __init__ documentations sometimes missing valid keyword values

Change by Terry J. Reedy <tjreedy@udel.edu>: ---------- versions: +Python 3.10 -Python 2.7, Python 3.6, Python 3.7, Python 3.8 _______________________________________ Python tracker <report@bugs.python.org> <https://bugs.python.org/issue34154> _______________________________________