syntax highlighting for glsl.js

docs/manual/en/introduction/Useful-links.html

@@ -125,6 +125,10 @@
 		<li>
 			[link:http://idflood.github.io/ThreeNodes.js/ ThreeNodes.js].
 		</li>
+		<li>
+			<a href="https://marketplace.visualstudio.com/items?itemName=bierner.comment-tagged-templates" target="_blank">comment-tagged-templates</a> -
+			VSCode extension syntax highlighting for tagged template strings, like: glsl.js.
+		</li>
 	 </ul>
 
 	<h2>WebGL References</h2>