Added missing setPixelRatio() to spotlights example.

examples/webgl_lights_spotlights.html

@@ -50,6 +50,7 @@
 			if ( ! Detector.webgl ) Detector.addGetWebGLMessage();
 
 			var renderer = new THREE.WebGLRenderer();
+			renderer.setPixelRatio( window.devicePixelRatio );
 
 			var camera = new THREE.PerspectiveCamera( 35, window.innerWidth / window.innerHeight, 1, 2000 );