Formatting changes for the show command

cmd/show.go

@@ -50,7 +50,7 @@ func ShowCmd(args CmdArgs) (int, error) {
 		fmt.Printf("    location:%s\n", l.Location.Name)
 		fmt.Printf("  Last Seen: %s (%.1fs ago)\n", l.LastSeen, l.SecondsLastSeen)
 
-		if i+1 < len(lights) {
+		if i < len(lights)-1 {
 			fmt.Println()
 		}
 	}