message: add <tbody>, key for Tooltip.directions iteration
diff: @@ -56,6 +56,7 @@ const Index = props => (
  </Example>
  <Example name='Block'>
  <table>
  + <tbody>
  {[
  // 'black',
  'white',
  @@ -87,6 +88,7 @@ const Index = props => (
  ))}
  </tr>
  ))}
  + </tbody>
  </table>
  </Example>
  <Example name='Box'>
  @@ -422,7 +424,7 @@ const Index = props => (
  <Detail>
  <ExampleHeading mt={3}>Directions</ExampleHeading>
  {Tooltip.directions.map((d, i) => (
  - <Box p={3}>
  + <Box p={3} key={i}>
  <Tooltip text='Hello, Tooltip!' direction={d}>Tooltip direction={d}</Tooltip>
  </Box>
  ))}
  