fix: correct os.Exit code from -1 to 1 in main.go

As per the os.Exit documentation, the exit code should be in the rage
[0, 125]

main.go

@@ -11,6 +11,6 @@ func main() {
 	_, err := cli.Cli()
 	if err != nil {
 		fmt.Printf("%s\n", err)
-		os.Exit(-1)
+		os.Exit(1)
 	}
 }