message: Fixup message header documentation
diff: @@ -26,7 +26,7 @@ pub struct Message {
  pub reply: Option<String>,
  /// Payload of the message. Can be any arbitrary data format.
  pub payload: Bytes,
  - /// Optional headers. Rust client uses [http::header].
  + /// Optional headers.
  pub headers: Option<HeaderMap>,
  /// Optional Status of the message. Used mostly for internal handling.
  pub status: Option<StatusCode>,
  