docs(tutorial/step02): fix missing brace

Closes angular#4301

Author: byezel

docs/content/tutorial/step_02.ngdoc

@@ -167,7 +167,7 @@ describe('PhoneCat controllers', function() {
           ctrl = $controller('PhoneListCtrl', { $scope: scope });
 
       expect(scope.phones.length).toBe(3);
-    });
+    }));
   });
 });
 </pre>