fix(docs): Fix link to GitHub

Author: Airblader

projects/ngqp-demo/src/app/demo.component.html

@@ -21,7 +21,7 @@
             </a>
         </div>
     </div>
-    <a href="https://ngqp.io" rel="nofollow noopener" [class.collapse]="isNavbarExpanded">
+    <a href="https://www.github.com/Airblader/ngqp" rel="nofollow noopener" [class.collapse]="isNavbarExpanded">
         <fa-icon [icon]="faGithub" size="lg" class="text-light"></fa-icon>
     </a>
 </nav>