Updated Admin API Reference (markdown)

Admin-API-Reference.md

@@ -122,7 +122,8 @@ Example response:
       "Headers": {
         "Transformed-Postman-Token": "token is {{request.headers.Postman-Token}}",
         "Content-Type": "application/json"
-      }
+      },
+      "Delay": 10
     }
   }
 ]