Update prometheus-metrics-enable.md

Author: gracewehner

articles/azure-monitor/essentials/prometheus-metrics-enable.md

@@ -358,12 +358,16 @@ NAME                            DESIRED   CURRENT   READY   AGE
 ama-metrics-5c974985b8          1         1         1       11h
 ama-metrics-ksm-5fcf8dffcd      1         1         1       11h
 ```
+## Feature Support
 
+- ARM64 and Mariner nodes are supported.
+- HTTP Proxy is supported and will use the same settings as the HTTP Proxy settings when the cluster was created.
 
 ## Limitations
 
 - CPU and Memory requests and limits can't be changed for Container insights metrics addon. If changed, they'll be reconciled and replaced by original values in a few seconds.
-- Metrics addon doesn't work on AKS clusters configured with HTTP proxy.
+- Azure Monitor Private Link (AMPLS) is not currently supported.
+- Only public clouds are currently supported.
 
 
 ## Uninstall metrics addon