message: Fix the name of the command
diff: @@ -223,7 +223,7 @@ impl<'b> Shell<'b> {
  self.watch_foreground(-(pid as i32), "")
  }
  Err(ref err) if err.kind() == io::ErrorKind::NotFound => {
  - self.command_not_found(&args[0]);
  + self.command_not_found(name);
  NO_SUCH_COMMAND
  }
  Err(ref err) => {
  @@ -535,7 +535,7 @@ fn spawn_proc(
  *current_pid = pid;
  }
  Err(ref mut err) if err.kind() == io::ErrorKind::NotFound => {
  - shell.command_not_found(&args[0])
  + shell.command_not_found(name)
  }
  Err(ref mut err) => {
  eprintln!("ion: command exec error: {}", err);
  