fix alert name

examples/js/nodes/utils/NormalMapNode.js

@@ -34,7 +34,7 @@ THREE.NormalMapNode.prototype.generate = function( builder, output ) {
 	}
 	else {
 
-		console.warn( "THREE.NormalMap is not compatible with " + builder.shader + " shader." );
+		console.warn( "THREE.NormalMapNode is not compatible with " + builder.shader + " shader." );
 
 		return builder.format( 'vec3( 0.0 )', this.type, output );