tag translate none

add_filter('get_the_archive_title',function ($title, $original_title, $prefix){
    if ($prefix === 'Tag:') {
        $prefix = '';
        $title = sprintf(
        /* translators: 1: Title prefix. 2: Title. */
            _x( '%1$s %2$s', 'archive title' ),
            $prefix,
            '<span>' . $original_title . '</span>'
        );
    }
    return $title;
},99999,3);