clarified cluster agent check docs (#18493)

* clarified cluster agent check docs

* change tense

Co-authored-by: DeForest Richards <56796055+drichards-87@users.noreply.github.com>

---------

Co-authored-by: DeForest Richards <56796055+drichards-87@users.noreply.github.com>

Author: mirzanurkic-dd

datadog_cluster_agent/README.md

@@ -10,43 +10,47 @@ Follow the instructions below to install and configure this check for an Agent r
 
 ### Installation
 
-The Datadog-Cluster-Agent check is included in the [Datadog Agent][2] package.
+The Datadog Cluster Agent check is included in the [Datadog Agent][2] package.
 No additional installation is needed on your server.
 
 ### Configuration
+The Datadog Cluster Agent check uses [Autodiscovery][3] to automatically configure itself in most scenarios. The check runs in the Datadog Agent pod on the same node as the Cluster Agent pod. It will not run in the Cluster Agent itself.
 
-1. Edit the `datadog_cluster_agent.d/conf.yaml` file, in the `conf.d/` folder at the root of your Agent's configuration directory to start collecting your datadog_cluster_agent performance data. See the [sample datadog_cluster_agent.d/conf.yaml][3] for all available configuration options.
+If you need to further configure the check:
 
-2. [Restart the Agent][4].
+1. Edit the `datadog_cluster_agent.d/conf.yaml` file, in the `conf.d/` folder at the root of your Agent's configuration directory to start collecting your datadog_cluster_agent performance data. See the [sample datadog_cluster_agent.d/conf.yaml][4] for all available configuration options.
+
+2. [Restart the Agent][5].
 
 ### Validation
 
-[Run the Agent's status subcommand][5] and look for `datadog_cluster_agent` under the Checks section.
+[Run the Agent's status subcommand][6] and look for `datadog_cluster_agent` under the Checks section.
 
 ## Data Collected
 
 ### Metrics
 
-See [metadata.csv][6] for a list of metrics provided by this check.
+See [metadata.csv][7] for a list of metrics provided by this check.
 
 ### Events
 
 The Datadog-Cluster-Agent integration does not include any events.
 
 ### Service Checks
 
-See [service_checks.json][7] for a list of service checks provided by this integration.
+See [service_checks.json][8] for a list of service checks provided by this integration.
 
 ## Troubleshooting
 
-Need help? Contact [Datadog support][8].
+Need help? Contact [Datadog support][9].
 
 
 [1]: https://docs.datadoghq.com/agent/cluster_agent/
 [2]: https://docs.datadoghq.com/agent/kubernetes/integrations/
-[3]: https://github.com/DataDog/integrations-core/blob/master/datadog_cluster_agent/datadog_checks/datadog_cluster_agent/data/conf.yaml.example
-[4]: https://docs.datadoghq.com/agent/guide/agent-commands/#start-stop-and-restart-the-agent
-[5]: https://docs.datadoghq.com/agent/guide/agent-commands/#agent-status-and-information
-[6]: https://github.com/DataDog/integrations-core/blob/master/datadog_cluster_agent/metadata.csv
-[7]: https://github.com/DataDog/integrations-core/blob/master/datadog_cluster_agent/assets/service_checks.json
-[8]: https://docs.datadoghq.com/help/
+[3]: https://docs.datadoghq.com/getting_started/containers/autodiscovery/
+[4]: https://github.com/DataDog/integrations-core/blob/master/datadog_cluster_agent/datadog_checks/datadog_cluster_agent/data/conf.yaml.example
+[5]: https://docs.datadoghq.com/agent/guide/agent-commands/#start-stop-and-restart-the-agent
+[6]: https://docs.datadoghq.com/agent/guide/agent-commands/#agent-status-and-information
+[7]: https://github.com/DataDog/integrations-core/blob/master/datadog_cluster_agent/metadata.csv
+[8]: https://github.com/DataDog/integrations-core/blob/master/datadog_cluster_agent/assets/service_checks.json
+[9]: https://docs.datadoghq.com/help/