Update links to Azure Arc site manager in IoT Operations documentation

Author: dominicbetts

articles/iot-operations/deploy-iot-ops/howto-prepare-cluster.md

@@ -182,7 +182,7 @@ az iot ops verify-host
 
 ## Create sites
 
-To manage which clusters your OT users have access to, you can group your clusters into sites. To learn more, see [What is Azure Arc site manager (preview)?](https://aka.ms/sitedocs).
+To manage which clusters your OT users have access to, you can group your clusters into sites. To learn more, see [What is Azure Arc site manager (preview)?](../../azure-arc/site-manager/overview.md).
 
 ## Next steps
 

articles/iot-operations/get-started/quickstart-add-assets.md

@@ -42,7 +42,7 @@ To create asset endpoints, assets and subscribe to OPC UA tags and events, use t
 
 ## Select your site
 
-After you sign in, the portal displays a list of sites that you have access to. Each site is a collection of Azure IoT Operations instances where you can configure your assets. Your [IT administrator is responsible for organizing instances in to sites](https://aka.ms/sitedocs) and granting access to OT users in your organization. Because you're working with a new deployment, there are no sites yet. You can find the cluster you created in the previous quickstart by selecting **Unassigned instances**. In the portal, an instance represents a cluster where you deployed Azure IoT Operations.
+After you sign in, the portal displays a list of sites that you have access to. Each site is a collection of Azure IoT Operations instances where you can configure your assets. Your [IT administrator is responsible for organizing instances in to sites](../../azure-arc/site-manager/overview.md) and granting access to OT users in your organization. Because you're working with a new deployment, there are no sites yet. You can find the cluster you created in the previous quickstart by selecting **Unassigned instances**. In the portal, an instance represents a cluster where you deployed Azure IoT Operations.
 
 :::image type="content" source="media/quickstart-add-assets/site-list.png" alt-text="Screenshot that shows the unassigned instances node in the Azure IoT Operations (preview) portal.":::
 

articles/iot-operations/manage-devices-assets/howto-manage-assets-remotely.md

@@ -45,7 +45,7 @@ To sign in to the Azure IoT Operations (preview) portal, navigate to the [Azure
 
 ## Select your site
 
-After you sign in, the portal displays a list of sites that you have access to. Each site is a collection of Azure IoT Operations instances where you can configure your assets. Your [IT administrator is responsible for organizing instances in to sites](https://aka.ms/sitedocs) and granting access to OT users in your organization. Instances that aren't part of a site appear in the **Unassigned instances** node. Select the site that you want to use:
+After you sign in, the portal displays a list of sites that you have access to. Each site is a collection of Azure IoT Operations instances where you can configure your assets. Your [IT administrator is responsible for organizing instances in to sites](../../azure-arc/site-manager/overview.md) and granting access to OT users in your organization. Instances that aren't part of a site appear in the **Unassigned instances** node. Select the site that you want to use:
 
 :::image type="content" source="media/howto-manage-assets-remotely/site-list.png" alt-text="Screenshot that shows a list of sites in the Azure IoT Operations (preview) portal.":::