message: Fix `Portforwarder` doc comment
diff: @@ -75,7 +75,7 @@ enum Message {
  ///
  /// Provides `AsyncRead + AsyncWrite` for each port and **does not** bind to local ports. Error
  /// channel for each port is only written by the server when there's an exception and
  -//. the port cannot be used (didn't initialize or can't be used anymore).
  +/// the port cannot be used (didn't initialize or can't be used anymore).
  pub struct Portforwarder {
  ports: HashMap<u16, DuplexStream>,
  errors: HashMap<u16, ErrorReceiver>,
  