Update emby.json (#4998)

Author: tremor021

frontend/public/json/emby.json

@@ -6,7 +6,7 @@
   ],
   "date_created": "2024-05-02",
   "type": "ct",
-  "updateable": false,
+  "updateable": true,
   "privileged": false,
   "interface_port": 8096,
   "documentation": "https://emby.media/support/articles/Home.html",