Sent comments notifications to multiple users

Something like this should work:

 add_filter('comment_notification_recipients', 'override_comment_notice_repicient', 10, 2);
    function override_comment_notice_repicient($emails, $comment_id) {  
        $admins = get_users( array(
            'role__in'     => array('administrator'),
        ) );
        foreach ( $admins as $user ) {
            $emails[] =  $user->user_email;
        }
        return ($emails);
    }