Editorial: fix various issues

* Markup: lowercase tag-name
* Wording: make the "update href" setup more conventional
* Spelling: insert apostrophe-s

Author: jmdyck

source

@@ -11552,7 +11552,7 @@ partial interface <dfn id="document" data-lt="">Document</dfn> {
 
     <ol>
      <li><p><span data-x="list append">Append</span> the <span data-x="serialization of an
-     origin">serialization</span> of <var>origin</Var> to <var>output</var>.</p></li>
+     origin">serialization</span> of <var>origin</var> to <var>output</var>.</p></li>
     </ol>
    </li>
 
@@ -26688,8 +26688,8 @@ document.body.appendChild(wbr);</code></pre>
   </div>
 
   <div algorithm>
-  <p>To <span>update <code>href</code></span> for <code>HTMLAnchorElement</code> and
-  <code>HTMLAreaElement</code>, set the element's <code data-x="attr-hyperlink-href">href</code>
+  <p>To <span>update <code>href</code></span> for an <code>HTMLAnchorElement</code> or
+  <code>HTMLAreaElement</code> element, set the element's <code data-x="attr-hyperlink-href">href</code>
   content attribute's value to the element's <span data-x="concept-hyperlink-url">url</span>, <span
   data-x="concept-url-serializer">serialized</span>.</p>
   </div>
@@ -97813,7 +97813,7 @@ interface <dfn interface>Location</dfn> { // but see also <a href="#the-location
    data-x="concept-settings-object-origin">origin</span>, then throw a
    <span>"<code>SecurityError</code>"</span> <code>DOMException</code>.</p></li>
 
-   <li><p><span>Assert</span>: <span>this</span>'s <span>relevant <code>Document</code></span> <span
+   <li><p><span>Assert</span>: <span>this</span>'s <span>relevant <code>Document</code></span>'s <span
    data-x="concept-document-ancestor-origins-list">ancestor origins list</span> is not
    null.</p></li>