docs: def pformat_check(success, checker, message):
      """Pretty print a check result
  
      :param success: `True` if the check was successful, `False` otherwise.
      :param checker: The checker dict that was executed
      :param message: The label for the check
      :returns: A string representation of the check
  
      """
      # TODO: Make this prettier.
      return "[{}] {}: {}".format("✓" if success else "✗", checker["checker"], message)