message: fix(aio): remove title from callout
diff: @@ -247,11 +247,9 @@ next to the original _ES5_ version for comparison:
  </code-pane>
  </code-tabs>
  -<div class="callout is-helpful">
  -
  {@a name-constructor}
  - ### Name the constructor
  +<div class="callout is-helpful">
  A **named** constructor displays clearly in the console log
  if the component throws a runtime error.
  