Hi I made some pages password protected with wpDataTables but now employee wants the pages in the dashboard instead.  I find Wordpress docs on creating custom admin menu with content but when I add shortcode it does not work.  please help.

function my_admin_menu() {
add_menu_page(
__( 'Sample page', 'my-textdomain' ),
__( 'Sample menu', 'my-textdomain' ),
'manage_options',
'sample-page',
'my_admin_page_contents',
'dashicons-schedule',
3
);
}

add_action( 'admin_menu', 'my_admin_menu' );

function my_admin_page_contents() {
?>
[wpdatatable id=4]
<?php
}