wkk -> waku rlpx based on discussion

eth/p2p/rlpx_protocols/waku_protocol.nim

@@ -522,7 +522,7 @@ proc initMessage*(env: Envelope, powCalc = true): Message =
 proc hash*(msg: Message): hashes.Hash = hash(msg.hash.data)
 
 proc allowed*(msg: Message, config: WakuConfig): bool =
-  # Check max msg size, already happens in RLPx but there is a specific wkk
+  # Check max msg size, already happens in RLPx but there is a specific waku
   # max msg size which should always be < RLPx max msg size
   if msg.size > config.maxMsgSize:
     warn "Message size too large", size = msg.size
@@ -748,7 +748,7 @@ proc initProtocolState*(network: WakuNetwork, node: EthereumNode) {.gcsafe.} =
   asyncCheck node.run(network)
 
 p2pProtocol Waku(version = wakuVersion,
-                 rlpxName = "wkk",
+                 rlpxName = "waku",
                  peerState = WakuPeer,
                  networkState = WakuNetwork):