Display the details meta field on a WooCommerce product_cat term archive

functions.php

<?php

add_action( 'woocommerce_after_shop_loop', 'wpm_product_cat_display_details_meta' );
/**
 * Display details meta on Product Category archives.
 *
 */
function wpm_product_cat_display_details_meta() {

	if ( ! is_tax( 'product_cat' ) ) {
		return;
	}

	$t_id = get_queried_object()->term_id;
	$details = get_term_meta( $t_id, 'details', true );

	if ( '' !== $details ) {
		?>
		<div class="product-cat-details">
			<?php echo apply_filters( 'the_content', wp_kses_post( $details ) ); ?>
		</div>
		<?php
	}

}