Merge pull request #2264 from w3c/popovertargetaction-clarification

HTML AAM: Clarification for popovertargetaction

html-aam/index.html

@@ -13450,7 +13450,7 @@ <h4 id="att-popovertarget">`popovertarget`</h4>
                 <ul>
                   <li>The element's `popovertargetaction` attribute value is "`hide`"</li>
                   <li>The associated popover element is the next immediate accessibility sibling to the invoking element,</li>
-                  <li>The element's `popovertargetaction` attribute is the "`auto`" state and the element is a descendant of the `popover` it is associated with.</li>
+                  <li>The element's implicit or explicit `popovertargetaction` is the "`auto`" state and the element is a descendant of the `popover` it is associated with.</li>
                   <!-- accessibility sibling will be defined in the ARIA specification -->
                 </ul>
               </td>