doc/gatt-api.txt: Add support for Included Service

included service support implemented at server side
diff --git a/doc/gatt-api.txt b/doc/gatt-api.txt
index ccf3a8b..9579381 100644
--- a/doc/gatt-api.txt
+++ b/doc/gatt-api.txt
@@ -45,7 +45,7 @@
 			belongs to. Only present on services from remote
 			devices.
 
-		array{object} Includes [read-only]: Not implemented
+		array{object} Includes [read-only]
 
 			Array of object paths representing the included
 			services of this service.