fix bad shadow parameters -- resolve part 2 of #8545

examples/webgl_animation_skinning_morph.html

@@ -122,7 +122,7 @@
 				light.castShadow = true;
 
 				light.shadow.mapSize.width = 1024;
-				light.shadow.mapSize.heigth = 1024;
+				light.shadow.mapSize.height = 1024;
 
 				var d = 390;