message: Refactor: update message list style
diff: @@ -438,16 +438,16 @@ export const MessageUnorderedList = () => (
  <Message.Timestamp>12:00 PM</Message.Timestamp>
  </Message.Header>
  <Message.Body>
  - <Message.Paragraph>Unordered list</Message.Paragraph>
  + <Message.Paragraph>Unordered list:</Message.Paragraph>
  <Message.UnorderedList>
  <Message.UnorderedListItem>
  - ut enim ad minim
  + Ut enim ad minim
  </Message.UnorderedListItem>
  <Message.UnorderedListItem>
  - incididunt ut labore
  + Incididunt ut labore
  </Message.UnorderedListItem>
  <Message.UnorderedListItem>
  - labore et dolore
  + Labore et dolore
  </Message.UnorderedListItem>
  </Message.UnorderedList>
  </Message.Body>
  @@ -486,13 +486,13 @@ export const MessageOrderedList = () => (
  <Message.Timestamp>12:00 PM</Message.Timestamp>
  </Message.Header>
  <Message.Body>
  - <Message.Paragraph>Ordered list</Message.Paragraph>
  + <Message.Paragraph>Ordered list:</Message.Paragraph>
  <Message.OrderedList>
  - <Message.OrderedListItem>ut enim ad minim</Message.OrderedListItem>
  + <Message.OrderedListItem>Ut enim ad minim</Message.OrderedListItem>
  <Message.OrderedListItem>
  - incididunt ut labore
  + Incididunt ut labore
  </Message.OrderedListItem>
  - <Message.OrderedListItem>labore et dolore</Message.OrderedListItem>
  + <Message.OrderedListItem>Labore et dolore</Message.OrderedListItem>
  </Message.OrderedList>
  </Message.Body>
  <MessageReactions>
  