adding information on metrics for PANOS integration (#17371)

* adding information on metrics for Palo alto integration

* updating Readme

* updating README to link to network vendors page per PM

Author: aliciascott

pan_firewall/README.md

@@ -60,13 +60,13 @@ Firewall authentication logs provide detailed information on users as they authe
 
 ## Data Collected
 
-### Logs
+### Metrics
 
-The PANOS integration collects logs from the Palo Alto Networks firewall integration and forwards them to Datadog.
+The metrics collected for this integration are determined by the relevant configured profiles on the [network vendors][9] page. 
 
-### Metrics
+### Logs
 
-The PANOS integration does not include any metrics.
+The PANOS integration collects logs from the Palo Alto Networks firewall integration and forwards them to Datadog.
 
 ### Events
 
@@ -95,3 +95,5 @@ Need help? Contact [Datadog support][7].
 [6]: https://docs.datadoghq.com/logs/log_collection/?tab=tailexistingfiles#getting-started-with-the-agent
 [7]: https://docs.datadoghq.com/help/
 [8]: https://docs.paloaltonetworks.com/pan-os/10-1/pan-os-admin/monitoring/use-syslog-for-monitoring/syslog-field-descriptions
+[9]: https://docs.datadoghq.com/network_monitoring/devices/#vendor-profiles
+