Update repo URL

Author: simonihmig

package.json

@@ -5,7 +5,7 @@
   "keywords": [
     "ember-addon"
   ],
-  "repository": "https://github.com/kaliber5/ember-bootstrap-constraint-validations.git",
+  "repository": "https://github.com/ember-bootstrap/ember-bootstrap-constraint-validations.git",
   "license": "MIT",
   "author": "Simon Ihmig <simon.ihmig@kaliber5.de>",
   "directories": {