Change resource slug

function chipmunk_register_post_type_args($args, $post_type)
{
  if ("resource" === $post_type) {
    $args["rewrite"]["slug"] = "podcast"; // Set your new slug here
  }

  return $args;
}
add_filter("register_post_type_args", "chipmunk_register_post_type_args", 10, 2);