<?php

function acme_woocomerce_custom_archive_description() {
    if( !function_exists( 'get_field' ) ) {
        return;
    }

    $term = get_queried_object();

    if( !empty( get_field( 'kategoria_leiras', $term ) ) ) {
        echo wp_kses_post( wpautop( get_field( 'kategoria_leiras',  $term ) ) );
    }
}

add_action( 'woocommerce_archive_description', 'acme_woocomerce_custom_archive_description' );