docs(search): fix search submit functionality

When the search input box was submitted (i.e. by pressing enter) the
app was supposed to take you to the first item but this was not happening.
It turns out the app was just reading the wrong property for the path to
the item.

Closes #3078

docs/app/src/search.js

@@ -35,7 +35,7 @@ angular.module('search', [])
       }
     }
     if(result) {
-      $location.path(result.url);
+      $location.path(result.path);
       $scope.hideResults();
     }
   };