Correction: update aria-checked allowances (#372)

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

Author: scottaohara

index.html

@@ -1464,8 +1464,8 @@ 
                 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` elementsa>.
+              <p class="proposed addition">
+                Authors <a href="#att-checked">MUST NOT use the `aria-checked` attribute on `input type=checkbox` elementsa>.
               p>
               <p>
                 Otherwise, any <a data-cite="wai-aria-1.2#global_states">global `aria-*` attributesa> and
@@ -1661,8 +1661,8 @@ 
                 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` elementsa>.
               p>
               <p>
@@ -3230,15 +3230,18 @@ 
                 `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">checkednessa>, 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">checkednessa> 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 @@ 
     section>
     <section class="informative">
       <h2>Change logh2>
+      <p>The <a href="https://github.com/w3c/html-aria/commits/">full commit historya> for this specification.p>
+      
       <h3>Substantive changes since the last published Recommendationh3>
       <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 Prohibiteda> elements.
@@ -4753,7 +4762,7 @@ Substantive changes since the last published Recommendation
         li>
         <li>
           18-Jan-2022:
-          Added <a href="#docconformance-deprecated">Requirements for deprecated ARIA role, state and property and attributesa>.
+          Added <a href="#docconformance-deprecated">Requirements for deprecated ARIA role, state and property attributesa>.
         li>
         <li>
           06-Jan-2022: