Correction: update aria-checked allowances (#372)

closes  #361
* update aria-checked allowances
* update change log

index.html

@@ -1464,8 +1464,8 @@ <h2 id="docconformance">
                 or <a href="#index-aria-switch">`switch`</a>;
                 <a href="#index-aria-button">`button` if used with `aria-pressed`</a>
               </p>
-              <p>
-                Authors <a href="#att-checked">SHOULD NOT use the `aria-checked` attribute on `input type=checkbox` elements</a>.
+              <p class="proposed addition">
+                Authors <a href="#att-checked">MUST NOT use the `aria-checked` attribute on `input type=checkbox` elements</a>.
               </p>
               <p>
                 Otherwise, any <a data-cite="wai-aria-1.2#global_states">global `aria-*` attributes</a> and
@@ -1661,8 +1661,8 @@ <h2 id="docconformance">
                 Role:
                 <a href="#index-aria-menuitemradio">`menuitemradio`</a>
               </p>
-              <p>
-                Authors <a href="#att-checked">SHOULD NOT use the
+              <p class="proposed addition">
+                Authors <a href="#att-checked">MUST NOT use the
                 `aria-checked` attribute on `input type=radio` elements</a>.
               </p>
               <p>
@@ -3230,15 +3230,18 @@ <h3 id="docconformance-attr">
                 `aria-checked="true"`
               </td>
               <td>
+                <div class="proposed addition">
+                  <p>
+                    Use the `checked` attribute on any element that is allowed the `checked` attribute in HTML. 
+                    Use the <a data-cite="html/input.html#dom-input-indeterminate">`indeterminate`</a> IDL attribute to indicate the "mixed" state for <a data-cite="html/input.html#checkbox-state-(type=checkbox)">`input type=checkbox`</a> elements.
+                  </p>
+                  <p>
+                    Authors MUST NOT use the <a data-cite="wai-aria-1.2#aria-checked">`aria-checked`</a> attribute on any element where the <a data-cite="html/form-control-infrastructure.html#concept-fe-checked">checkedness</a>, or the 
+                    indeterminate checked value of the element can be in opposition to the current value of the `aria-checked` attribute.
+                  </p>
+                </div>
                 <p>
-                  Use the `checked` attribute on any element that is
-                  allowed the `checked` attribute in HTML.
-                </p>
-                <p>
-                  Authors SHOULD NOT use the <a data-cite="wai-aria-1.2#aria-checked">`aria-checked`</a> attribute on any element where the <a data-cite="html/form-control-infrastructure.html#concept-fe-checked">checkedness</a> of the element can be in opposition to the current value of the `aria-checked` attribute.
-                </p>
-                <p>
-                  Authors MAY use the `aria-checked` attribute on any other element with a WAI-ARIA role which allows the  attribute.
+                  Authors MAY use the `aria-checked` attribute on any other element with a WAI-ARIA role which allows the attribute.
                 </p>
               </td>
             </tr>
@@ -4732,8 +4735,14 @@ <h2>
     </section>
     <section class="informative">
       <h2>Change log</h2>
+      <p>The <a href="https://github.com/w3c/html-aria/commits/">full commit history</a> for this specification.</p>
+
       <h3>Substantive changes since the last published Recommendation</h3>
       <ul>
+        <li>
+          16-Apr-2022:
+          <a href="#att-checked">`aria-checked`</a> is not to be used on elements that support the `checked` attribute.
+        </li>
         <li>
           03-Apr-2022:
           Identify <a href="dfn-naming-prohibited">Naming Prohibited</a> elements.
@@ -4753,7 +4762,7 @@ <h3>Substantive changes since the last published Recommendation</h3>
         </li>
         <li>
           18-Jan-2022:
-          Added <a href="#docconformance-deprecated">Requirements for deprecated ARIA role, state and property and attributes</a>.
+          Added <a href="#docconformance-deprecated">Requirements for deprecated ARIA role, state and property attributes</a>.
         </li>
         <li>
           06-Jan-2022: