[Bug-fix, PARK-64] Updating spelling error

Updating the spelling of licence (license -> licence) on the Registration Module

There are many class names that also contain this misspelling. I'd recommend also changing those, to keep things consistent. Please advise if I should go ahead with this (will also mention this on Jira card).

https://jira.westfieldlabs.com/browse/PARK-64?filter=-1