add mention of image role (#498)

Co-authored-by: Valerie Young <spectranaut@gmail.com>

index.html

@@ -2964,7 +2964,8 @@ <h4 id=el-img>`img`</h4>
     <tr>
       <th>[[wai-aria-1.2]]</th>
       <td>
-        <a class="core-mapping" href="#role-map-img">`img`</a> role
+        <a class="core-mapping" href="#role-map-image">`image`</a>
+        or  <a class="core-mapping" href="#role-map-img">`img`</a>role
       </td>
     </tr>
     <tr>
@@ -2995,6 +2996,10 @@ <h4 id=el-img>`img`</h4>
     <tr>
       <th>Comments</th>
       <td>
+        <p class="note">
+          ARIA 1.3 adds the `image` role as the preferred synonym to the ARIA 1.0 `img` role.
+          The expected computed role for named `img` elements is now "image".
+        </p>
       </td>
     </tr>
   </tbody>
@@ -3014,6 +3019,7 @@ <h4 id=el-img-empty-alt>`img` <span class="el-context">(`alt`attribute value is
       <th>[[wai-aria-1.2]]</th>
       <td>
         <div class="role">
+          <a class="core-mapping" href="#role-map-none">`none`</a> or
           <a class="core-mapping" href="#role-map-presentation">`presentation`</a>
         </div>
       </td>
@@ -16741,6 +16747,7 @@ <h3>Change Log</h3>
       <section>
         <h4>Substantive changes since moving to the <a href="https://www.w3.org/WAI/ARIA/">Accessible Rich Internet Applications Working Group</a> (03-Nov-2019)</h4>
         <ul>
+          <li>03-Oct-2023: Update image mappings to reference the primary synonym roles (`image` and `none`). See <a href="https://github.com/w3c/html-aam/pull/498">GitHub PR 498</a>.</li>
           <li>03-Oct-2023: Clarify when to expose required field as invalid. See <a href="https://github.com/w3c/html-aam/pull/429">GitHub PR 429</a>.</li>
           <li>06-Jun-2023: Add computed roles for all HTML elements. See <a href="https://github.com/w3c/html-aam/pull/465">GitHub PR 465</a>.</li>
           <li>28-Mar-2023: Add `inert` attribute mapping. See <a href="https://github.com/w3c/html-aam/pull/410">GitHub PR 410</a>.</li>