ax(node): replace prose comment with usage example on PeerRateLimiter.Allow

Co-Authored-By: Charon <charon@lethean.io>

pkg/node/transport.go

@@ -134,7 +134,7 @@ func NewPeerRateLimiter(maxTokens, refillRate int) *PeerRateLimiter {
 	}
 }
 
-// Allow checks if a message is allowed and consumes a token if so
+// if limiter.Allow() { process(msg) } else { drop(msg) }
 func (r *PeerRateLimiter) Allow() bool {
 	r.mutex.Lock()
 	defer r.mutex.Unlock()