ax(node): replace prose comment with usage example on GetRemoteStats

AX Principle 2 — comments must show HOW with real values, not restate
what the type signature already says.

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

pkg/node/controller.go

@@ -111,7 +111,8 @@ func (c *Controller) sendRequest(peerID string, msg *Message, timeout time.Durat
 	}
 }
 
-// GetRemoteStats requests miner statistics from a remote peer.
+// stats, err := ctrl.GetRemoteStats("abc123def456")
+// if err == nil { log("miners:", len(stats.Miners)) }
 func (c *Controller) GetRemoteStats(peerID string) (*StatsPayload, error) {
 	identity := c.node.GetIdentity()
 	if identity == nil {