message: Fix copy-paste error in doc comment
diff: @@ -939,7 +939,8 @@ impl<REv> EffectBuilder<REv> {
  )
  }
  - /// Announces that we have finished gossiping the indicated item.
  + /// Announces that we have received a gossip message from this peer,
  + /// implying the peer holds the indicated item.
  pub(crate) async fn announce_gossip_received<T>(self, item_id: T::Id, sender: NodeId)
  where
  REv: From<GossiperAnnouncement<T>>,
  