message: Minor cosmetic fix
diff: @@ -40,7 +40,7 @@ fn main() {
  Arg::with_name("validator")
  .short("v")
  .long("validator")
  - .value_name("KEY,STAKE")
  + .value_name("KEY,STAKE[,BALANCE]")
  .help("A validator config in the format 'public_key,stake[,balance]'")
  .takes_value(true)
  .required(true)
  