Update nat-metrics.md

Author: aimee-littleton

articles/nat-gateway/nat-metrics.md

@@ -313,14 +313,15 @@ The metrics dashboard can be used to better understand the performance and healt
 
 For more information on what each metric is showing you and how to analyze these metrics, see [How to use NAT gateway metrics](#how-to-use-nat-gateway-metrics).
 
+## Metrics FAQ
 
 ### What type of metrics are available for NAT gateway?
 
 The NAT gateway supports [multi-dimensional metrics](/azure/azure-monitor/essentials/data-platform-metrics#multi-dimensional-metrics). You can filter the multi-dimensional metrics by different dimensions to gain greater insight into the provided data. The [SNAT connection count](#snat-connection-count) metric allows you to filter the connections by Attempted and Failed connections, enabling you to distinguish between different types of connections made by the NAT gateway.
 
 Refer to the dimensions column in the [metrics overview](#metrics-overview) table to see which dimensions are available for each NAT gateway metric. 
 
-### How to store NAT gateway metrics long-term
+### How do I store NAT gateway metrics long-term?
 
 All [platform metrics are stored](/azure/azure-monitor/essentials/data-platform-metrics#retention-of-metrics) for 93 days. If you require long term access to your NAT gateway metrics data, NAT gateway metrics can be retrieved by using the [metrics REST API](/rest/api/monitor/metrics/list). For more information on how to use the API, see the [Azure monitoring REST API walkthrough](/azure/azure-monitor/essentials/rest-api-walkthrough).  
 
@@ -329,7 +330,7 @@ All [platform metrics are stored](/azure/azure-monitor/essentials/data-platform-
 >
 >To retrieve NAT gateway metrics, use the metrics REST API.
 
-### How to interpret metrics charts
+### How do I interpret metrics charts?
 
 Refer to [troubleshooting metrics charts](/azure/azure-monitor/essentials/metrics-troubleshoot) if you run into issues with creating, customizing or interpreting charts in Azure metrics explorer.