OBSDOCS-2569 Fix Monitoring docs xrefs for COO

Author: gabriel-rh

observability/monitoring/shiftstack-prometheus-configuration.adoc

@@ -31,4 +31,4 @@ include::modules/monitoring-shiftstack-metrics.adoc[leveloffset=+1]
 [role="_additional-resources"]
 [id="additional-resources_{context}"]
 == Additional resources
-* xref:../../observability/cluster_observability_operator/cluster-observability-operator-overview.adoc#understanding-the-cluster-observability-operator_cluster_observability_operator_overview[Cluster Observability Operator overview]
+* link:https://docs.redhat.com/en/documentation/red_hat_openshift_cluster_observability_operator/1-latest/html/about_red_hat_openshift_cluster_observability_operator/cluster-observability-operator-overview-1[Cluster Observability Operator overview]