Fix Ports for Prometheus & Grafana in Docs
Defines the proper ports for Grafana (port 3000) and Prometheus (port
9090) in the prerequisites section of the documentation for installing
the PostgreSQL Operator monitoring infrastructure.
@@ -26,6 +26,6 @@ and their default Service ports.
| Service | Port |
| --- | --- |
-| Grafana | 9090 |
-| Prometheus | 3000 |
+| Grafana | 3000 |
+| Prometheus | 9090 |
| Alertmanager | 9093 |
