Changes the redirect URL for the Return To Shop button in the cart.

functions.php

/**
 * Changes the redirect URL for the Return To Shop button in the cart.
 *
 * @return string
 */
function wc_empty_cart_redirect_url() {
	return 'http://yourdomain.com/your-page/';
}
add_filter( 'woocommerce_return_to_shop_redirect', 'wc_empty_cart_redirect_url' );