add_filter( 'get_recommend_cards_tag', function( $tag ) {
  $text = '<p class="recommended-text list-title bold"><span class="list-title-in">おすすめ記事</span></p>';
  $search = '<div id="recommended-in"';
  $replace = $text . $search;
  $tag = str_replace( $search, $replace, $tag );

  return $tag;
});