[docs] [issue28489] Fix comment in tokenizer.c

Eric V. Smith added the comment: I'd actually change this to be something like: Process b"", r"", u"", and the various legal combinations. There are 24 total combinations when you add upper case. I actually wrote a script in Lib/tokenize.py to generate them all. And when I add binary f-strings, that number climbs to 80. ---------- nosy: +eric.smith _______________________________________ Python tracker <report@bugs.python.org> <http://bugs.python.org/issue28489> _______________________________________