Docs AnimationSystem link GLTF2Loader fixed

docs/manual/introduction/Animation-system.html

@@ -112,7 +112,7 @@
 				<li>THREE.BVHLoader</li>
 				<li>THREE.FBXLoader</li>
 				<li>THREE.FBXLoader2</li>
-				<li>[page:GLTFLoader THREE.GLTFLoader]</li>
+				<li>[page:GLTF2Loader THREE.GLTF2Loader]</li>
 				<li>THREE.MMDLoader</li>
 				<li>THREE.SEA3DLoader</li>
 			</ul>