Examples: Fix typo in CSG example (#25507)

examples/webgl_geometry_csg.html

@@ -90,7 +90,7 @@
 				renderer.setPixelRatio( window.devicePixelRatio );
 				renderer.setSize( window.innerWidth, window.innerHeight );
 				renderer.shadowMap.enabled = true;
-				renderer.shadowMap.type = THREE.PCFSoftShadow;
+				renderer.shadowMap.type = THREE.PCFSoftShadowMap;
 				document.body.appendChild( renderer.domElement );
 
 				stats = new Stats();