added screenshot for diagnostic logs

Author: joannapea

articles/data-share/how-to-monitor.md

@@ -43,6 +43,8 @@ You can view more details about each snapshot run by clicking on the run start d
 
 Up to 30 days of snapshot history is displayed by default. If you need to see more than 30 days worth of history, navigate to Monitoring -> Diagnostic settings and select **Add diagnostic setting**. You will be required to select a storage account to store these logs into. 
 
+![Snapshot history](./media/diagnostic-settings.png "Diagnostic settings") 
+
 ## Next Steps 
 
 Learn more about [Azure Data Share terminology](terminology.md)