update ms.date in metadata and clarify wording about performance logs not populating

Author: amsliu

support/azure/azure-monitor/log-analytics/configure-and-manage-log-analytics-tables/troubleshoot-performance-logs-not-populating.md

@@ -13,7 +13,7 @@ Users might experience issues if performance logs don't populate in Azure Govern
 
 ## Common issues and solutions
 
-- **Issue**: Alerts don't populate performance logs when you use DCR.
+- **Issue**: Performance logs don't populate when you use DCR to set up alerts.
 - **Root Cause**: The custom KQL query is run against the DCR, but the DCR can't access to the required data tables. In this situation, the alert scope defaults to DCR. This action prevents data retrieval.
 - **Solution**: Set the alert scope to the Log Analytics workspace that's associated with the DCR.
 

support/azure/azure-monitor/toc.yml

@@ -95,7 +95,7 @@ items:
   items:
   - name: Configure and Manage Log analytics tables
     items:
-    - name: Troubleshoot Performance Logs Not Populating in Azure Government
+    - name: Troubleshoot performance logs not populating in Azure Government
       href: log-analytics/configure-and-manage-log-analytics-tables/troubleshoot-performance-logs-not-populating.md
   - name: Log Analytics workspaces
     items: