Fix markup errors that mess up TOC generation.

Author: dbaron

selectors4/Overview.html

@@ -227,10 +227,8 @@ <h2 class="no-num no-toc" id=contents>Table of contents</h2>
      <li><a href="#dir-pseudo"><span class=secno>9.1. </span> The
       directionality pseudo-class <code>:dir()</code></a>
 
-     <li><a href="#x"><span class=secno>9.2. </span> </a>
-
-     <li><a href="#lang-pseudo"><span class=secno>9.3. </span> The language
-      pseudo-class <code>:lang<</code>/h3> </code></a>
+     <li><a href="#lang-pseudo"><span class=secno>9.2. </span> The language
+      pseudo-class <code>:lang</code></a>
     </ul>
 
    <li><a href="#UIstates"><span class=secno>10. </span> The UI element
@@ -1787,8 +1785,6 @@ <h2 id=linguistic-pseudos><span class=secno>9. </span> Linguistic
   <h3 id=dir-pseudo><span class=secno>9.1. </span> The directionality
    pseudo-class <code>:dir()</code></h3>
 
-  <h3 id=x><span class=secno>9.2. </span></h3>
-
   <p>The <code>:dir()</code> pseudo-class allows the author to write
    selectors that represent an element based on its directionality as
    determined by the document language. For example, in HTML <a
@@ -1822,8 +1818,8 @@ <h3 id=x><span class=secno>9.2. </span></h3>
    <code>:dir(rtl)</code> depending on the resolved directionality of the
    elements as determined by its contents.
 
-  <h3 id=lang-pseudo><span class=secno>9.3. </span> The language pseudo-class
-   <code>:lang<</code>/h3> </code></h3>
+  <h3 id=lang-pseudo><span class=secno>9.2. </span> The language pseudo-class
+   <code>:lang</code></h3>
 
   <p>If the document language specifies how the human language of an element
    is determined, it is possible to write selectors that represent an element

selectors4/Overview.src.html

@@ -1345,7 +1345,7 @@ <h2 id="linguistic-pseudos">
 Linguistic Pseudo-classes</h2>
 
 <h3 id="dir-pseudo">
-The directionality pseudo-class <code>:dir()</code><h3>
+The directionality pseudo-class <code>:dir()</code></h3>
 
   <p>The <code>:dir()</code> pseudo-class allows the author to write
   selectors that represent an element based on its directionality as
@@ -1380,7 +1380,7 @@ <h3 id="dir-pseudo">
   elements as determined by its contents.</p>
 
 <h3 id=lang-pseudo>
-The language pseudo-class <code>:lang<</code>/h3>
+The language pseudo-class <code>:lang</code></h3>
 
   <p>If the document language specifies how the human language of an
   element is determined, it is possible to write selectors that