Fix Other Features sidebar nesting for Send Alerts to Robusta

Move toctree to end of configuration/index.rst (after content) to
match the pattern used by gitops/index.rst. When the toctree was
before the heading, Sphinx rendered children as flat siblings.
With toctree after content, alertmanager pages now nest properly
under "Send Alerts to Robusta" in the sidebar.

Also set Other Features maxdepth to 4 to allow deep nesting.

https://claude.ai/code/session_0184fwhrjC4ELrYQBMCbyhfS

Author: claude

docs/configuration/index.rst

@@ -1,29 +1,5 @@
 :hide-toc:
 
-.. toctree::
-   :maxdepth: 1
-   :hidden:
-
-   alertmanager-integration/outofcluster-prometheus
-   alertmanager-integration/alert-manager
-   alertmanager-integration/eks-managed-prometheus
-   alertmanager-integration/azure-managed-prometheus
-   alertmanager-integration/coralogix_managed_prometheus
-   alertmanager-integration/embedded-prometheus
-   alertmanager-integration/google-managed-prometheus
-   alertmanager-integration/google-managed-alertmanager
-   alertmanager-integration/grafana-self-hosted
-   alertmanager-integration/grafana-cloud
-   alertmanager-integration/victoria-metrics
-   alertmanager-integration/dynatrace
-   alertmanager-integration/gcp-monitoring
-   alertmanager-integration/nagios
-   alertmanager-integration/newrelic
-   alertmanager-integration/pagerduty-alerting
-   alertmanager-integration/solarwinds
-   alertmanager-integration/customize-labels-priorities
-   exporting/custom-webhooks
-
 Send Alerts to Robusta
 =======================
 
@@ -141,3 +117,27 @@ Advanced
         :class-card: sd-bg-light sd-bg-text-light
         :link: exporting/custom-webhooks
         :link-type: doc
+
+.. toctree::
+   :maxdepth: 1
+   :hidden:
+
+   alertmanager-integration/outofcluster-prometheus
+   alertmanager-integration/alert-manager
+   alertmanager-integration/eks-managed-prometheus
+   alertmanager-integration/azure-managed-prometheus
+   alertmanager-integration/coralogix_managed_prometheus
+   alertmanager-integration/embedded-prometheus
+   alertmanager-integration/google-managed-prometheus
+   alertmanager-integration/google-managed-alertmanager
+   alertmanager-integration/grafana-self-hosted
+   alertmanager-integration/grafana-cloud
+   alertmanager-integration/victoria-metrics
+   alertmanager-integration/dynatrace
+   alertmanager-integration/gcp-monitoring
+   alertmanager-integration/nagios
+   alertmanager-integration/newrelic
+   alertmanager-integration/pagerduty-alerting
+   alertmanager-integration/solarwinds
+   alertmanager-integration/customize-labels-priorities
+   exporting/custom-webhooks

docs/index.rst

@@ -41,7 +41,7 @@
    configuration/exporting/prometheus-query-api
 
 .. toctree::
-   :maxdepth: 1
+   :maxdepth: 4
    :caption: Other Features
    :hidden: