Fix typo in docs
There was a typo in doc for `ProtocolID` alias
@@ -19,7 +19,7 @@ type Multiaddr = multiaddr.Multiaddr
// Refer to the docs on that type for more info.
type PeerID = peer.ID
-// PeerID aliases protocol.ID.
+// ProtocolID aliases protocol.ID.
//
// Refer to the docs on that type for more info.
type ProtocolID = protocol.ID
