fix renamed brightness to color-adjustment

examples/webgl_postprocessing_nodes.html

@@ -108,7 +108,7 @@
 				gui = new dat.GUI();
 
 				var example = gui.add( param, 'example', {
-					'basic / brightness': 'brightness',
+					'basic / color-adjustment': 'color-adjustment',
 					'basic / blends': 'blends',
 					'basic / fade': 'fade',
 					'basic / invert': 'invert',