fix lint

cmd/collection/main.go

@@ -168,7 +168,7 @@ func main() {
 		// rate limiting for accounts, default is 2 transactions every 2.5 seconds
 		// Note: The rate limit configured for each node may differ from the effective network-wide rate limit
 		// for a given payer. In particular, the number of clusters and the message propagation factor will
-		// influence how the individual rate limit translates to a network-wide rate limit. 
+		// influence how the individual rate limit translates to a network-wide rate limit.
 		// For example, suppose we have 5 collection clusters and configure each Collection Node with a rate
 		// limit of 1 message per second. Then, the effective network-wide rate limit for a payer address would
 		// be *at least* 5 messages per second.