Merge pull request #92682 from gabriel-rh/OBSDOCS-1844

OBSDOCS-1844 add incidents to overview

Author: gabriel-rh

observability/cluster_observability_operator/cluster-observability-operator-overview.adoc

@@ -16,6 +16,7 @@ The {coo-short} deploys the following monitoring components:
 * **Alertmanager** (optional) - Provides alert configuration capabilities for different services.
 * **UI plugins** (optional) - Enhances the observability capabilities with plugins for monitoring, logging, distributed tracing and troubleshooting.
 * **Korrel8r** (optional) - Provides observability signal correlation, powered by the open source Korrel8r project.
+* **Incident detection** (optional) - Groups related alerts into incidents, to help you identify the root causes of alert bursts.
 
 include::modules/coo-versus-default-ocp-monitoring.adoc[leveloffset=+1]