NG: Fixed prom-stak

k8s-ng/core/prom-stack/README.md

@@ -32,8 +32,8 @@ them. This protects data from a manifest rename, but it is not a backup. Back up
 
 - node `music` must exist and `/data` must be the intended large filesystem;
 - `main-rw.psql.svc` and the generated `grafana-db` Secret must be ready;
-- `vaultwarden-login` must resolve the existing Grafana OIDC and Telegram item
-  UUIDs used in `external-secrets.yaml`;
+- `vaultwarden-fields` must resolve `k8s/prometheus/grafana-secrets` with the
+  custom fields `IDM Client ID`, `IDM Client Secret`, `TG Token`, and `TG ID`;
 - DNS for `gf.hexor.cy` and `prom.hexor.cy` must point to the new cluster.
 
 After Argo CD reports the application healthy, verify targets, rules and log