update bullet 3 of name calc (#1475)

updates name calculation bullet 3 to state:
“the element does not support name from author”
rather than “the element has no name”

Author: scottaohara

index.html

@@ -678,7 +678,7 @@ <h3>Accessible Name Calculation</h3>
 						<li>contents: name comes from the text value of the <a>element</a> node. Although this may be allowed in addition to "author" in some <a>roles</a>, this is used in content only if higher priority "author" features are not provided. Priority is defined by the <a href="#mapping_additional_nd_te" class="accname">accessible name and description computation</a> algorithm [[ACCNAME-1.2]].</li>
             <li>encapsulation: name comes from the text value of the <a>element</a> node with role <code>label</code> that is the closest ancestor. Although "encapsulation" may be allowed in addition to "author" and "contents" in some <a>roles</a>, "encapsulation" is used only if higher priority "author" features are not provided. Priority is defined by the <a href="#mapping_additional_nd_te" class="accname">accessible name and description computation</a> algorithm.</li>
             <li>legend: name comes from the text value of the first descendant <a>element</a> node with the role of <code>legend</code>.  Although "legend" may be allowed in addition to "author" in some <a>roles</a>, "legend" is used in content only if higher priority "author" features are not provided. Priority is defined by the <a href="#mapping_additional_nd_te" class="accname">accessible name and description computation</a> algorithm.</li>
-            <li>prohibited: the element has no name. Authors MUST NOT use the <pref>aria-label</pref> or <pref>aria-labelledby</pref> attributes to name the element.</li>
+            <li>prohibited: the element does not support name from author. Authors MUST NOT use the <pref>aria-label</pref> or <pref>aria-labelledby</pref> attributes to name the element.</li>
 					</ol>
 				</dd>
 			</dl>