Update CubeCamera.html

docs/api/en/cameras/CubeCamera.html

@@ -24,7 +24,7 @@
 		scene.add( cubeCamera );
 
 		// Create car
-		var chromeMaterial = new THREE.MeshLambertMaterial( { color: 0xffffff, envMap: cubeCamera.renderTarget } );
+		var chromeMaterial = new THREE.MeshLambertMaterial( { color: 0xffffff, envMap: cubeCamera.renderTarget.texture } );
 		var car = new Mesh( carGeometry, chromeMaterial );
 		scene.add( car );