clarify empty alt / issue #55

index.html

@@ -1486,7 +1486,7 @@ <h3>HTML Element Role Mappings</h3>
                 <td class="comments"></td>
             </tr>
             <tr tabindex="-1" id="el-img-emptyalt">
-                <th><a href="https://www.w3.org/TR/html/semantics-embedded-content.html#the-img-element"><code>img</code></a> <span class="el-context">(<a href="https://www.w3.org/TR/html/semantics-embedded-content.html#element-attrdef-img-alt"><code>alt</code></a> attribute value is an empty string, i.e. <code>alt=""</code>)</span></th>
+                <th><a href="https://www.w3.org/TR/html/semantics-embedded-content.html#the-img-element"><code>img</code></a> <span class="el-context">(<a href="https://www.w3.org/TR/html/semantics-embedded-content.html#element-attrdef-img-alt"><code>alt</code></a> attribute value is an empty string, i.e. <code>alt=""</code> or <code>alt</code> with no value in the markup)</span></th>
                 <td class="aria">
                   <div class="role"><a class="core-mapping" href="#role-map-presentation"><code>presentation</code></a></div>
                   <div class="general">See also the Note under <a href="#img-element-accessible-name-computation"><code>img</code> element Accessible Name Computation</a>.</div>