docs(guide/component-router): specify correct version of npm package

The latest npm package does not contain the angular 1 version of the router.

Closes #14564
Closes #14560

Author: petebacondarwin

Diff for: docs/content/guide/component-router.ngdoc

@@ -468,7 +468,7 @@ AngularJS itself via npm:
 ```bash
 npm init
 npm install angular@1.5.x --save
-npm install @angular/router --save
+npm install @angular/router@0.2.0 --save
 ```