docs: remove duplicate article and update the main one (Icon Fonts)

build/nginx.conf

@@ -156,6 +156,9 @@ http {
 		rewrite ^/tutorial/ng-chapter-\d$ $proto://$host_and_port/start/introduction permanent;
 		rewrite ^(/angular)?/start/hello-world/ng-chapter-0 $proto://$host_and_port$1/start/introduction permanent;
         rewrite ^(/angular)?/start/hello-world/ng-chapter-1 $proto://$host_and_port$1/start/introduction permanent;
+
+		# Redirect duplicate Icon Fonts aerticle to the updated UI examples
+		rewrite ^(/angular)?/ui/icon-fonts $proto://$host_and_port$1/ui/ns-ui-widgets/icon-fonts permanent;
 
 		# Redirect the JavaScript Groceries tutorial links
 		rewrite ^/start/getting-started $proto://$host_and_port/start/introduction permanent;