torrentcore: trap service unavailable

src/Jackett.Common/Definitions/torrentcore.yml

@@ -65,6 +65,7 @@ search:
     - path: "{{ if .Keywords }}search?s={{ .Keywords }}{{ else }}index{{ end }}"
     # search is an exact match, there are no wild cards, or +word or AND/OR, and spaces and dots are treated uniquely
   error:
+    - selector: :root:contains("Service Unavailable")
     - selector: :root:contains("Connection failed")
       message:
         text: "Connection failed: Connection refused"