MAGETWO-83853: GraphQL response returns null for website_ids, url_path

- add documentation

Author: cpartica

app/code/Magento/StoreGraphQl/etc/schema.graphqls

@@ -1,11 +1,11 @@
 # Copyright © Magento, Inc. All rights reserved.
 # See COPYING.txt for license details.
 
-type Website {
-    id : Int
-    name : String
-    code : String
-    sort_order : Int
-    default_group_id : String
-    is_default : Boolean
+type Website @doc(description: "The type contains information about a website") {
+    id : Int @doc(description: "The ID number assigned to the website")
+    name : String @doc(description: "The website name. Websites use this name to identify it easyer.")
+    code : String @doc(description: "A code assigned to the website to identify it")
+    sort_order : Int @doc(description: "The attribute to use for sorting websites")
+    default_group_id : String @doc(description: "The default group id that the website has")
+    is_default : Boolean @doc(description: "Specifies if this is the default website")
 }