Using Anchor Link in wp_link_pages

Hello!

I want users to be able to press ‘Next Page’ button in a single post to continue to the next page in the same post, pointing to a specific anchor, let’s say #content.

<?php
    $defaults = array(
        'before'           => '<p>' . __( 'Pages:' ),
        'after'            => '</p>',
        'link_before'      => '',
        'link_after'       => '',
        'next_or_number'   => 'number',
        'separator'        => ' ',
        'nextpagelink'     => __( 'Next page' ),
        'previouspagelink' => __( 'Previous page' ),
        'pagelink'         => '%',
        'echo'             => 1
    );

        wp_link_pages( $defaults );

?>

These are the arguments I have.

Any help would be much appreciated. Have a nice day!