Merge branch 'master' into claude/add-gcp-webhook-docs-1K2de

Author: Avi-Robusta

docs/index.rst

@@ -41,6 +41,7 @@
    Embedded Prometheus Stack <configuration/alertmanager-integration/embedded-prometheus>
    Google Managed Prometheus <configuration/alertmanager-integration/google-managed-prometheus>
    GCP Cloud Monitoring <configuration/alertmanager-integration/gcp-monitoring>
+   Google Managed Alertmanager <configuration/alertmanager-integration/google-managed-alertmanager>
    Grafana - Self-Hosted <configuration/alertmanager-integration/grafana-self-hosted>
    Grafana Cloud <configuration/alertmanager-integration/grafana-cloud>
    Nagios <configuration/alertmanager-integration/nagios>