libp2p/dialer.nim: tiny log change to make it clearer a connection upgrade (#1071)

Author: Ivansete-status

libp2p/dialer.nim

@@ -85,7 +85,7 @@ proc dialAndUpgrade(
           # If we failed to establish the connection through one transport,
           # we won't succeeded through another - no use in trying again
           await dialed.close()
-          debug "Upgrade failed", err = exc.msg, peerId = peerId.get(default(PeerId))
+          debug "Connection upgrade failed", err = exc.msg, peerId = peerId.get(default(PeerId))
           if exc isnot CancelledError:
             if dialed.dir == Direction.Out:
               libp2p_failed_upgrades_outgoing.inc()