Remove unnecessary comma in webgl_lines_cubes

examples/webgl_lines_cubes.html

@@ -104,7 +104,7 @@
 
 								   [ m1, scale*0.5, [2*d, 0, 0],  g1 ], [ m1, scale*0.5, [-2*d, 0, 0],  g1 ],
 								   [ m1, scale*0.5, [2*d, d, 0],  g1 ], [ m1, scale*0.5, [-2*d, d, 0],  g1 ],
-								   [ m1, scale*0.5, [2*d, -d, 0], g1 ], [ m1, scale*0.5, [-2*d, -d, 0], g1 ],
+								   [ m1, scale*0.5, [2*d, -d, 0], g1 ], [ m1, scale*0.5, [-2*d, -d, 0], g1 ]
 								   ];
 
 				for ( i = 0; i < parameters.length; i ++ ) {