Fix typo in webgl_materials_bumpmap_skin

examples/webgl_materials_bumpmap_skin.html

@@ -216,7 +216,7 @@
 
 				effectCopy.renderToScreen = true;
 
-				var pars = { minFilter: THREE.LinearFilter, magFilter: THREE.LinearFilter, format: THREE.RGBFormat, stencilBufer: false };
+				var pars = { minFilter: THREE.LinearFilter, magFilter: THREE.LinearFilter, format: THREE.RGBFormat, stencilBuffer: false };
 				var rtwidth = 512, rtheight = 512;
 
 				composerBeckmann = new THREE.EffectComposer( renderer, new THREE.WebGLRenderTarget( rtwidth, rtheight, pars ) );