Use single "L" form of "canceled" [#72147]

Also "canceler" and "canceling" but not "cancellation".

The migration takes about 10 minutes for me when I'm using Oracle. Also some `OrderDetail`s in the NU dev database are invalid so the `save!` call skips validations.
I don't know the story behind "Super Canceled". It doesn't seem to exist in the NU dev database, FWIW.