docs($templateCache): highlight the $templateCache service

Closes angular#11294

Author: cironunes

src/ng/cacheFactory.js

@@ -372,7 +372,7 @@ function $CacheFactoryProvider() {
  * the document, but it must be a descendent of the {@link ng.$rootElement $rootElement} (IE,
  * element with ng-app attribute), otherwise the template will be ignored.
  *
- * Adding via the $templateCache service:
+ * Adding via the `$templateCache` service:
  *
  * ```js
  * var myApp = angular.module('myApp', []);