message: Fix typo on payload method.
diff: @@ -32,7 +32,7 @@ impl<T: Packet> Packet for alloc::boxed::Box<T> {
  /// Retrieve the payload for the packet.
  fn payload(&self) -> &[u8] {
  - self.packet()
  + self.payload()
  }
  }
  @@ -44,7 +44,7 @@ impl<T: Packet> Packet for &T {
  /// Retrieve the payload for the packet.
  fn payload(&self) -> &[u8] {
  - self.packet()
  + self.payload()
  }
  }
  