update reference to redirecting page

Author: colleenmcginnis

redirects.yml

@@ -364,6 +364,7 @@ redirects:
   'deploy-manage/users-roles/cluster-or-deployment-auth/built-in-roles.md': 'elasticsearch://reference/elasticsearch/roles.md'
   'deploy-manage/users-roles/cluster-or-deployment-auth/elasticsearch-privileges.md': 'elasticsearch://reference/elasticsearch/security-privileges.md'
 
+# Related to https://github.com/elastic/docs-content/issues/1449
 # APM Agent files (owned by ingest-docs)
   'solutions/observability/apm/apm-agent-central-configuration.md': 'solutions/observability/apm/apm-agents/central-configuration.md'
   'solutions/observability/apm/create-upload-source-maps-rum.md': 'solutions/observability/apm/apm-agents/create-upload-source-maps-rum.md'
@@ -409,7 +410,7 @@ redirects:
   'solutions/observability/apm/use-internal-collection-to-send-monitoring-data.md': 'solutions/observability/apm/apm-server/use-internal-collection-to-send-monitoring-data.md'
   'solutions/observability/apm/use-metricbeat-to-send-monitoring-data.md': 'solutions/observability/apm/apm-server/use-metricbeat-to-send-monitoring-data.md'
   'solutions/observability/apm/use-select-metrics-emitted-directly-to-monitoring-cluster.md': 'solutions/observability/apm/apm-server/use-select-metrics-emitted-directly-to-monitoring-cluster.md'
-# APM OpenTelemetry pages
+# APM OpenTelemetry pages (owned by ingest-docs)
   'solutions/observability/apm/attributes.md': 'solutions/observability/apm/opentelemetry/attributes.md'
   'solutions/observability/apm/collect-metrics.md': 'solutions/observability/apm/opentelemetry/collect-metrics.md'
   'solutions/observability/apm/data-stream-routing.md': 'solutions/observability/apm/opentelemetry/data-stream-routing.md'

solutions/observability/get-started/opentelemetry/quickstart/self-managed/index.md

@@ -21,7 +21,7 @@ Select the quickstart guide for your environment from the following list:
 - [Docker on self-managed](docker.md)
 - [Hosts or VMs on self-managed](hosts_vms.md)
 
-Before following the quickstart guides to set up your EDOT deployment, make sure to [install your self-managed Elastic Stack](/solutions/observability/apm/use-opentelemetry-with-apm.md).
+Before following the quickstart guides to set up your EDOT deployment, make sure to [install your self-managed Elastic Stack](/solutions/observability/apm/opentelemetry/index.md).
 
 ## Troubleshooting