refactor(@schematics/angular): cleanup application polyfill comments

Author: clydin

packages/schematics/angular/application/files/src/polyfills.ts

@@ -28,15 +28,15 @@
 // import 'core-js/es6/math';
 // import 'core-js/es6/string';
 // import 'core-js/es6/date';
+// import 'core-js/es6/array';
 // import 'core-js/es6/regexp';
 // import 'core-js/es6/map';
 // import 'core-js/es6/weak-map';
 // import 'core-js/es6/set';
 
 /**
- * If your app need to indexed by Google Search, your app require polyfills 'core-js/es6/array'
- * Google bot use ES5.
- * FYI: Googlebot uses a renderer following the similar spec to Chrome 41.
+ * If the application will be indexed by Google Search, the following is required.
+ * Googlebot uses a renderer based on Chrome 41.
  * https://developers.google.com/search/docs/guides/rendering
  **/
 // import 'core-js/es6/array';
@@ -75,7 +75,6 @@
 import 'zone.js/dist/zone';  // Included with Angular CLI.
 
 
-
 /***************************************************************************************************
  * APPLICATION IMPORTS
  */