fix(docs/guide/component): wrong $componentController usage

Author: ptgamr

docs/content/guide/component.ngdoc

@@ -420,18 +420,19 @@ The examples use the [Jasmine](http://jasmine.github.io/) testing framework.
 **Controller Test:**
 ```js
 describe('component: heroDetail', function() {
-  var component, scope, hero;
+  var component, scope, hero, componentController;
 
   beforeEach(module('simpleComponent'));
 
   beforeEach(inject(function($rootScope, $componentController) {
     scope = $rootScope.$new();
+    componentController = $componentController;
     hero = {name: 'Wolverine'};
   }));
 
   it('should set the default values of the hero', function() {
     // It's necessary to always pass the scope in the locals, so that the controller instance can be bound to it
-    component = $componentController('heroDetail', {$scope: scope});
+    component = componentController('heroDetail', {$scope: scope});
 
     expect(component.hero).toEqual({
       name: undefined,
@@ -442,15 +443,15 @@ describe('component: heroDetail', function() {
   it('should assign the name bindings to the hero object', function() {
     // Here we are passing actual bindings to the component
 
-    component = $componentController('heroDetail',
+    component = componentController('heroDetail',
       {$scope: scope},
       {hero: hero}
     );
     expect(component.hero.name).toBe('Wolverine');
   });
 
   it('should call the onDelete binding when a hero is deleted', function() {
-    component = $componentController('heroDetail',
+    component = componentController('heroDetail',
       {$scope: scope},
       {hero: hero, onDelete: jasmine.createSpy('deleteSpy')}
     );