new screenshot for create lab tutorial with managed identity

Author: anishtrakru

articles/devtest-labs/media/tutorial-create-custom-lab/portal-create-basic-settings-managed-identity.png

@@ -47,7 +47,7 @@ To create a lab in Azure DevTest Labs, follow these steps.
    |**Artifacts storage account access**|You can configure whether the lab uses a User-assigned Managed Identity or a Shared Key to access the lab storage account. To use a User-assigned Managed Identity, select the appropriate managed identity from the list, otherwise select the Storage Account Shared Key option from the list.|
    |**Public environments**|Leave **On** for access to the [DevTest Labs public environment repository](https://github.com/Azure/azure-devtestlab/tree/master/Environments). Set to **Off** to disable access. For more information, see [Enable public environments when you create a lab](devtest-lab-create-environment-from-arm.md#set-public-environment-access-for-new-lab).|
 
-   :::image type="content" source="./media/tutorial-create-custom-lab/create-custom-lab-blade.png" alt-text="Screenshot of the Basic Settings tab of the Create DevTest Labs form.":::
+   :::image type="content" source="./media/tutorial-create-custom-lab/portal-create-basic-settings-managed-identity.png" alt-text="Screenshot of the Basic Settings tab of the Create DevTest Labs form.":::
 
 1. Optionally, select the [Auto-shutdown](devtest-lab-create-lab.md#auto-shutdown-tab), [Networking](devtest-lab-create-lab.md#networking-tab), or [Tags](devtest-lab-create-lab.md#tags-tab) tabs at the top of the page, and customize those settings. You can also apply or change most of these settings after lab creation.