docs(guide/controllers): Just a typo

Gingerbreak would break testing. :)

Oh my gosh he's right, it totally w/ould. That is so embarrassing!

Closes #10353

docs/content/guide/controller.ngdoc

@@ -326,7 +326,7 @@ describe('state', function() {
         expect(childScope.timeOfDay).toBe('morning');
         expect(childScope.name).toBe('Mattie');
         expect(grandChildScope.timeOfDay).toBe('evening');
-        expect(grandChildScope.name).toBe('Gingerbreak Baby');
+        expect(grandChildScope.name).toBe('Gingerbread Baby');
     });
 });
 ```