[WooCommerce Brands] Change permalink slug for brand archives

wc-brands-change-permalink-slug.php

function customise_product_brand_slug ( $tax ) {
	$tax['rewrite']['slug'] = 'custom-slug'; // Replace 'custom-slug' with your desired slug.
	return $tax;
}
add_filter( 'register_taxonomy_product_brand', 'customise_product_brand_slug' );