Remove obsolete manifest attribute references

source

@@ -15132,9 +15132,7 @@ interface <dfn interface>HTMLBaseElement</dfn> : <span>HTMLElement</span> {
 
   <p>A <code>base</code> element, if it has an <code data-x="attr-base-href">href</code> attribute,
   must come before any other elements in the tree that have attributes defined as taking <span
-  data-x="URL">URLs</span>, except the <code>html</code> element (its <code
-  data-x="attr-html-manifest">manifest</code> attribute isn't affected by <code>base</code>
-  elements).</p>
+  data-x="URL">URLs</span>.</p>
 
   <div w-nodev>
 
@@ -140845,8 +140843,7 @@ interface <dfn interface>External</dfn> {
      <td>none*</td>
      <td><code>head</code>*;
          <code>body</code>*</td>
-     <td><span data-x="global attributes">globals</span>;
-         <code data-x="attr-html-manifest">manifest</code></td>
+     <td><span data-x="global attributes">globals</span></td>
      <td><code>HTMLHtmlElement</code></td>
     </tr>
 
@@ -145773,6 +145770,7 @@ INSERT INTERFACES HERE
   Daniel Clark, <!-- dandclark on GitHub -->
   Daniel Davis,
   Daniel Ehrenberg,
+  Daniel Ethridge, <!-- wlib on GitHub -->
   Daniel Glazman,
   Daniel Holbert,
   Daniel Peng,