BasisTextureLoader: Update supported formats.

docs/examples/en/loaders/BasisTextureLoader.html

@@ -58,8 +58,8 @@
 			BasisTextureLoader transcodes input textures in '.basis' format to an
 			appropriate compressed texture format for the target device, where
 			possible. This allows the same source texture to be served across
-			desktop, Android, and iOS devices, and transcoded into DXT, ETC1, or
-			PVRTC1. Other output formats may be supported in the future.
+			desktop, Android, and iOS devices, and transcoded into ASTC, DXT, ETC1,
+			or PVRTC1. Other output formats may be supported in the future.
 		</p>
 		<p>
 			Transcoding to PVRTC1 (for iOS) requires square power-of-two textures.