message: remove guidance for heading best practice rule
diff: @@ -65,9 +65,6 @@ export const guidance = create(({ Markup, Link }) => (
  <li>
  Top-level (<Markup.Code>h1</Markup.Code>) headings can be similar, or even identical, to the page title.
  </li>
  - <li>
  - If the page uses headings, an automated check will fail if the page does not have exactly one top-level heading.
  - </li>
  </ul>
  <h3>Structure multiple headings on a page hierarchically. (best practice) </h3>
  