Config form has labels that aren't labels

[alisonjo315]

https://dev-cddemo.pantheonsite.io/admin/config/system/localist_pull/cornell

Basically, there are labels in this form that should just be headings / headings + styles, not labels -- and there are labels in this form that should be help text, or other description text.

Examples

<label data-drupal-selector="edit-localist-label" for="edit-localist-label" class="form-item__label">
<br>
<hr>
<h2>Localist URL configurations:</h2>
<hr>
</label>

<label data-drupal-selector="edit-date-label" for="edit-date-label" class="form-item__label">
<br>Date instructions:
  <ul>
    <li>Relative date  will be used if filled in</li>
    [ ... ]
  </ul>
</label>

(and a couple others)