message: docs: remove unused attribute
  Fixes
  PR Close
diff: <!-- #docplaster -->
  <!-- #docregion, heroes, outlet -->
  -<h1 id="main-content-header">{{title}}</h1>
  +<h1>{{title}}</h1>
  <!-- #enddocregion outlet -->
  <nav>
  <!-- #enddocregion heroes -->
  