update doc-pullquote superclass to section to match AAM mapping as reported in issue #7

Author: mattgarrish

dpub-aria/index.html

@@ -3780,7 +3780,7 @@ <h2>Definition of Roles</h2>
 							</tr>
 							<tr>
 								<th class="role-parent-head" scope="row">Superclass Role:</th>
-								<td class="role-parent"><rref>none</rref></td>
+								<td class="role-parent"><rref>section</rref></td>
 							</tr>
 							<tr>
 								<th class="role-children-head" scope="row">Subclass Roles:</th>