Woocommerce меняем ₴ на грн

add_filter('woocommerce_currency_symbol', 'add_my_currency_symbol', 10, 2);
 
function add_my_currency_symbol( $currency_symbol, $currency ) {
      switch( $currency ) {
          case 'UAH': $currency_symbol = ' грн'; break;
      }
      return $currency_symbol;
}