message: tweak param help
diff: @@ -240,8 +240,8 @@ function renderSimple(options: { props: ParamProps<any>, state: { showHelp: bool
  const help = props.param.help
  ? props.param.help(props.value)
  : { description: props.param.description, legend: props.param.legend };
  - const desc = props.param.description;
  const hasHelp = help.description || help.legend;
  + const desc = label + (hasHelp ? '. Click for help.' : '');
  return <>
  <ControlRow
  className={className}
  