update OBJLoader documentation (#9128)

docs/api/loaders/OBJLoader.html

@@ -46,7 +46,7 @@
 		</div>
 		<div>
 		Parse an <em>obj</em> text structure and return an [page:Object3D].<br />
-		Found objects are converted to [page:Mesh] with a [page:BufferGeometry] and a default [page:MeshLambertMaterial].
+		Found objects are converted to [page:Mesh] with a [page:BufferGeometry] and a default [page:MeshPhongMaterial].
 		</div>
 
 		<h2>Example</h2>