Fix T3 Code pairing command path in frontend notes

Author: lukdz

json/t3code.json

@@ -46,7 +46,7 @@
       "type": "warning"
     },
     {
-      "text": "Access T3 Code at http://<IP>:3773 and pair a device with the token/QR shown after install. Regenerate it with: `pct exec <CTID> -- t3 pair --base-dir /opt/t3code.`",
+      "text": "Access T3 Code at http://<IP>:3773 and pair a device with the token/QR shown after install. Regenerate it with: `pct exec <CTID> -- t3 pair --base-dir /opt/t3code`.",
       "type": "info"
     }
   ]