Changed `stencilBufer` to `stencilBuffer` in `examples/webgl_postprocessing.html`.

examples/webgl_postprocessing.html

@@ -220,7 +220,7 @@
 
 				renderScene = new THREE.TexturePass( composerScene.renderTarget2 );
 
-				rtParameters = { minFilter: THREE.LinearFilter, magFilter: THREE.LinearFilter, format: THREE.RGBFormat, stencilBufer: true };
+				rtParameters = { minFilter: THREE.LinearFilter, magFilter: THREE.LinearFilter, format: THREE.RGBFormat, stencilBuffer: true };
 
 				var rtWidth  = window.innerWidth / 2;
 				var rtHeight = window.innerHeight / 2;