Fix small typo in error log (#2975)

## Proposed Changes

Fixes a small typo I came across.

beacon_node/lighthouse_network/src/peer_manager/network_behaviour.rs

@@ -122,7 +122,7 @@ impl<TSpec: EthSpec> NetworkBehaviour for PeerManager<TSpec> {
             // TODO: directly emit the ban event?
             BanResult::BadScore => {
                 // This is a faulty state
-                error!(self.log, "Connecteded to a banned peer, re-banning"; "peer_id" => %peer_id);
+                error!(self.log, "Connected to a banned peer, re-banning"; "peer_id" => %peer_id);
                 // Reban the peer
                 self.goodbye_peer(peer_id, GoodbyeReason::Banned, ReportSource::PeerManager);
                 return;