docs(external-resources.ngdoc): fix broken link

Closes angular#16042

Author: sauravbhattacharya001

docs/content/guide/external-resources.ngdoc

@@ -139,7 +139,7 @@ You can find a larger list of AngularJS external libraries at [ngmodules.org](ht
   [CodeAcademy](http://www.codecademy.com/courses/javascript-advanced-en-2hJ3J/0/1),
   [CodeSchool](https://www.codeschool.com/courses/shaping-up-with-angular-js)
 * **Paid online:**
-  [Pluralsight (3 courses)](http://www.pluralsight.com/training/Courses/Find?highlight=true&searchTerm=angularjs),
+  [Pluralsight](https://www.pluralsight.com/search?q=angularjs),
   [Tuts+](https://tutsplus.com/course/easier-js-apps-with-angular/),
   [lynda.com](http://www.lynda.com/AngularJS-tutorials/Up-Running-AngularJS/133318-2.html),
   [WintellectNOW (4 lessons)](http://www.wintellectnow.com/Course/Detail/mastering-angularjs),