text: Title: Small issue in docs
  Body: I think there's a minor issue with this snippet in the docs at https://uplink.readthedocs.io/en/stable/user/quickstart.html#response-and-error-handling
  ```
  def raise_for_status(response):
      """Checks whether or not the response was successful."""
      if 200 <= response.status <= 299:
          raise UnsuccessfulRequest(response.url)
  
      # Pass through the response.
      return response
  ```
  
  I think condition of `if` describes a success case rather than a failure. Also if response is `response` of requests library it should probably be `response.status_code`  (Not sure whether `response.status` also works or not. I don't think it does.)