Update keycloak.json (#7256)

Author: tremor021

frontend/public/json/keycloak.json

@@ -36,10 +36,6 @@
       "text": "First start can take a few minutes",
       "type": "warning"
     },
-    {
-      "text": "This script requires some extra steps after the installation, Please checkout the `https://github.com/community-scripts/ProxmoxVE/discussions/193`",
-      "type": "info"
-    },
     {
       "text": "When updating, if you had modified cache-ispn.xml: Re-apply your changes to the new file, otherwise leave it unchanged.",
       "type": "info"