GITBOOK-56: Move Modal docs to the right spot

Author: nielslyngsoe

15/umbraco-cms/SUMMARY.md

@@ -164,9 +164,6 @@
       * [Workspace Actions](customizing/extending-overview/extension-types/workspaces/workspace-editor-actions.md)
       * [Workspace Context](customizing/extending-overview/extension-types/workspaces/workspace-context.md)
       * [Workspace Views](customizing/extending-overview/extension-types/workspaces/workspace-views.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)
     * [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)
@@ -185,6 +182,9 @@
     * [Trees](customizing/extending-overview/extension-types/tree.md)
     * [Global Context](customizing/extending-overview/extension-types/global-context.md)
     * [Localization](customizing/extending-overview/extension-types/localization.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)
   * [Extension Kind](customizing/extending-overview/extension-kind.md)
   * [Extension Conditions](customizing/extending-overview/extension-conditions.md)
   * [Custom Extension types](customizing/extending-overview/custom-extension-type.md)