Minor adjustment to structure

Author: sofietoft

15/umbraco-cms/SUMMARY.md

@@ -175,8 +175,8 @@
     * [Sections](customizing/extending-overview/extension-types/sections/README.md)
     * [Workspaces](customizing/extending-overview/extension-types/workspaces/README.md)
       * [Modals](customizing/extending-overview/extension-types/modals/README.md)
-    * [Confirm Dialog](customizing/extending-overview/extension-types/modals/confirm-dialog.md)
-    * [Custom Modals](customizing/extending-overview/extension-types/modals/custom-modals.md)
+      * [Confirm Dialog](customizing/extending-overview/extension-types/modals/confirm-dialog.md)
+      * [Custom Modals](customizing/extending-overview/extension-types/modals/custom-modals.md)
     * [Route Registration](customizing/extending-overview/extension-types/modals/route-registration.md)
     * [Menu](customizing/extending-overview/extension-types/menu.md)
     * [Header Apps](customizing/extending-overview/extension-types/header-apps.md)