Add quantity name beside quantity in woocommerce checkout page

add_filter( 'woocommerce_checkout_cart_item_quantity', 'customizing_checkout_item_quantity', 10, 3);
function customizing_checkout_item_quantity( $quantity_html, $cart_item, $cart_item_key ) {
    $quantity_html = ' <br>
            <span class="product-quantity" style="font-weight:bold;">' . __('Quantity:') . ' <strong>' . $cart_item['quantity'] . '</strong></span>';

    return $quantity_html;
}