Add more Keypad usages in the Keyboard/Keypad page
from USB HID Usage Tables document version 1.11.

Admitedly these are not going to be noticed when ukbd(4) is around.

While here, correct a typo (that's also in the HUT document),
and normalize to ASCII a non-UTF-8 encoding of "moire".

"This may prove useful to some of you someday,
perhaps in a somewhat bizarre set of circumstances."
                                - Tom Lehrer

(jakllsch)