fix links

Author: AbbyMSFT

articles/azure-arc/resource-bridge/security-overview.md

@@ -29,7 +29,7 @@ Azure Arc resource bridge stores resource information in Azure Cosmos DB. As des
 
 ## Security audit logs
 
-The [activity log](../../azure-monitor/essentials/activity-log-insights.md) is an Azure platform log that provides insight into subscription-level events. This includes tracking when the Azure Arc resource bridge is modified, deleted, or added. You can [view the activity log](../../azure-monitor/essentials/activity-log-insights.md#view-the-activity-log) in the Azure portal or retrieve entries with PowerShell and Azure CLI. By default, activity log events are [retained for 90 days](../../azure-monitor/essentials/activity-log.md#retention-period) and then deleted.
+The [activity log](../../azure-monitor/essentials/activity-log-insights.md) is an Azure platform log that provides insight into subscription-level events. This includes tracking when the Azure Arc resource bridge is modified, deleted, or added. You can [view the activity log](../../azure-monitor/essentials/activity-log-insights.md#view-the-activity-log) in the Azure portal or retrieve entries with PowerShell and Azure CLI. By default, activity log events are [retained for 90 days](../../azure-monitor/essentials/activity-log-insights.md#retention-period) and then deleted.
 
 ## Next steps
 

articles/azure-monitor/essentials/activity-log-insights.md

@@ -13,8 +13,6 @@ ms.reviewer: orens
 
 # Use Azure Monitor activity log insights to monitor changes to resources and resource groups 
 
-Activity log events are retained in Azure for *90 days* and then deleted. There's no charge for entries during this time regardless of volume. For more functionality, such as longer retention, create a diagnostic setting and route the entries to another location based on your needs. See the criteria in the preceding section.
-
 ## View the activity log
 
 You can access the activity log from most menus in the Azure portal. The menu that you open it from determines its initial filter. If you open it from the **Monitor** menu, the only filter is on the subscription. If you open it from a resource's menu, the filter is set to that resource. You can always change the filter to view all other entries. Select **Add Filter** to add more properties to the filter.
@@ -39,6 +37,10 @@ If any changes are associated with the event, you'll see a list of changes that
 
 :::image type="content" source="media/activity-log/change-history-event-details.png" lightbox="media/activity-log/change-history-event-details.png" alt-text="Screenshot that shows the Change history page showing differences.":::
 
+## Retention period
+
+Activity log events are retained in Azure for *90 days* and then deleted. There's no charge for entries during this time regardless of volume. For more functionality, such as longer retention, create a diagnostic setting and route the entries to another location based on your needs. See the criteria in the preceding section.
+
 ### Other methods to retrieve activity log events
 
 You can also access activity log events by using the following methods: