Require karl prefixed bearer secrets

README.md

@@ -305,7 +305,7 @@ The create response includes `registration_url`, `update_url`, and `dashboard_ur
 Use the dashboard secret to rotate the update URL:
 
 ```bash
-curl -sS -X POST https://karldns.de/api/v1/hostnames/<dashboard-secret>/rotate-update-url
+curl -sS -X POST https://karldns.de/api/v1/hostnames/<karl_dashboard_secret>/rotate-update-url
 ```
 
 The response contains a replacement `update_url`. The old update URL stops working immediately.