Update documentation link

Author: tremor021

frontend/public/json/qbittorrent.json

@@ -9,7 +9,7 @@
   "updateable": true,
   "privileged": false,
   "interface_port": 8090,
-  "documentation": null,
+  "documentation": "https://github.com/qbittorrent/qBittorrent/wiki/",
   "website": "https://www.qbittorrent.org/",
   "logo": "https://raw.githubusercontent.com/selfhst/icons/refs/heads/main/svg/qbittorrent.svg",
   "description": "qBittorrent offers a user-friendly interface that allows users to search for and download torrent files easily. It also supports magnet links, which allow users to start downloading files without the need for a torrent file.",