Fix typo in names of implicit property signals.
Fix typo in names of implicit property signals.

Ignore-this: 7999d2276bfa74954a38d44d06205e8b

darcs-hash:20141120223852-4d2ae-ddeb7fbb7dca68b5d865dcfd4d303c4c33487ee0

johntyree/HsQML,johntyree/HsQML