Update renovate.json

renovate.json

@@ -34,7 +34,7 @@
       "matchStrings": [
         "https://composes.stream.centos.org/development/(?<currentValue>.*)/compose/(.*)"
       ],
-      "datasourceTemplate": "c9s-compose",
+      "datasourceTemplate": "custom.c9s-compose",
       "depNameTemplate": "CentOS-Stream-9",
       "versioningTemplate": "regex:^CentOS-Stream-9-(?<major>\\d{8})\\.d\\.0$"
     }