Examples: fix tyto in HTML

examples/webgl_materials_nodes.html

@@ -30,7 +30,7 @@
 
 		<div id="container"></div>
 		<div id="info">
-			<a href="http://threejs.org" target="_blank" rel="noopener">three.js</a> - Node-Based Material</br>
+			<a href="http://threejs.org" target="_blank" rel="noopener">three.js</a> - Node-Based Material<br />
 			<a id="serialize" href="javascript:void(0);">Serialize and apply</a>
 		</div>