Fix note toggle trying to match on keyCode instead of mousetrap-reported key
Fix note toggle trying to match on keyCode instead of mousetrap-reported key

Fixes a typo made in f4301506d. Considered using e.keyCode on the event
handler instead of the key argument, but mousetrap uses keypress events
for those, which report different key codes from the keyup/keydown codes
used in <PlaybackWrapper>.

thomasboyt/bipp,thomasboyt/bipp