fix redirects

Author: alexwolfmsft

.openpublishing.redirection.azure.json

@@ -129,8 +129,8 @@
             "redirect_url": "/dotnet/azure/sdk/authentication/best-practices"
         },
         {
-            "source_path_from_root": "/dotnet/azure/sdk/authentication/azure-hosted-apps.md",
-            "redirect_url": "/dotnet/azure/sdk/authentication/system-assigned-managed-identity"
+            "source_path_from_root": "/docs/azure/sdk/authentication/azure-hosted-apps.md",
+            "redirect_url": "/docs/azure/sdk/authentication/system-assigned-managed-identity"
         }
     ]
 }

docs/azure/sdk/includes/sdk-auth-overview-managed-identity.md

@@ -3,4 +3,4 @@ Apps hosted in Azure should use a **Managed Identity service principal**. Manage
 For example, a .NET web app hosted in Azure App Service would be assigned a Managed Identity.  The Managed Identity assigned to the app would then be used to authenticate the app to other Azure services.<br>
 <br>
 > [!div class="nextstepaction"]
-> [Learn about auth from Azure-hosted apps](../authentication/azure-hosted-apps.md)
+> [Learn about auth from Azure-hosted apps](../authentication/index.md)