message: fix: demo break
diff: @@ -157,7 +157,7 @@ import useList from './index';
  return (
  <>
  <Table columns={columns} dataSource={list} rowKey={(r, index)=>getKey(index)} pagination={false} />
  - <Button onClick={()=>push(0)}>Add one line</Button>
  + <Button onClick={()=>push({})}>Add one line</Button>
  <Button type='primary' onClick={()=>alert(JSON.stringify(getFieldsValue()))}>submit</Button>
  </>
  )
  