How to add a read more button below post excerpts on archives in Genesis

add_action( 'genesis_entry_content', 'custom_add_read_more' );

function custom_add_read_more() {
    
	// if this is a singular page, abort.
    if (is_singular()) {
        return;
    }

    printf( '<a href="%s" class="more-link button">%s</a>', get_permalink(), esc_html__( 'Read More' ) );
}