docs(toh/js): fix typo -.ts should be .js

closes #2127

Author: adhintz

public/docs/js/latest/quickstart.jade

@@ -217,7 +217,7 @@ code-example(format="").
   Angular apps are composed of [Angular Modules](guide/ngmodule.html) that 
   snuggly contain all our components and everything else we need for our app.
 
-  Create the `app/app.module.ts` file with the following content:
+  Create the `app/app.module.js` file with the following content:
 
 +makeExample('quickstart/js/app/app.module.js', null, 'app/app.module.js')