Fixing typo in horizon widgets

Change-Id: Ic7d7c0a99bc7eead001eec3105a19546d4874641

horizon/static/framework/widgets/magic-search/magic-search.controller.spec.js

@@ -575,7 +575,7 @@
           magicSearchQuery: ["New"]
         };
         scope.$broadcast('initSearch', data);
-        // facetChoices is initialized on initSeach. Look for that init
+        // facetChoices is initialized on initSearch. Look for that init
         // as proof the method was called
         expect(ctrl.facetChoices).toEqual([]);
       });