docs: def secret_access_key(ecs_secret_access_key):
      """Display / set / update the ECS secret access key."""
      if not ecs_secret_access_key:
          click.secho(dtool_config.utils.get_ecs_secret_access_key(CONFIG_PATH))
      else:
          click.secho(dtool_config.utils.set_ecs_secret_access_key(
              CONFIG_PATH,
              ecs_secret_access_key
          ))