docs: Use <Hn> as Heading elements instead of <DIV class="doc_foo">.

H1 ... doc_title
H2 ... doc_section
H3 ... doc_subsection
H4 ... doc_subsubsection

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129736 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/TableGenFundamentals.html b/docs/TableGenFundamentals.html
index 90ac804..7efdfbb 100644
--- a/docs/TableGenFundamentals.html
+++ b/docs/TableGenFundamentals.html
@@ -7,7 +7,7 @@
 </head>
 <body>
 
-<div class="doc_title">TableGen Fundamentals</div>
+<h1>TableGen Fundamentals</h1>
 
 <div class="doc_text">
 <ul>
@@ -50,7 +50,7 @@
 </div>
 
 <!-- *********************************************************************** -->
-<div class="doc_section"><a name="introduction">Introduction</a></div>
+<h2><a name="introduction">Introduction</a></h2>
 <!-- *********************************************************************** -->
 
 <div class="doc_text">
@@ -75,7 +75,7 @@
 </div>
 
 <!-- ======================================================================= -->
-<div class="doc_subsection"><a name="concepts">Basic concepts</a></div>
+<h3><a name="concepts">Basic concepts</a></h3>
 
 <div class="doc_text">
 
@@ -112,7 +112,7 @@
 </div>
 
 <!-- ======================================================================= -->
-<div class="doc_subsection"><a name="example">An example record</a></div>
+<h3><a name="example">An example record</a></h3>
 
 <div class="doc_text">
 
@@ -212,7 +212,7 @@
 </div>
 
 <!-- ======================================================================= -->
-<div class="doc_subsection"><a name="running">Running TableGen</a></div>
+<h3><a name="running">Running TableGen</a></h3>
 
 <div class="doc_text">
 
@@ -258,7 +258,7 @@
 
 
 <!-- *********************************************************************** -->
-<div class="doc_section"><a name="syntax">TableGen syntax</a></div>
+<h2><a name="syntax">TableGen syntax</a></h2>
 <!-- *********************************************************************** -->
 
 <div class="doc_text">
@@ -271,10 +271,10 @@
 </div>
 
 <!-- ======================================================================= -->
-<div class="doc_subsection"><a name="primitives">TableGen primitives</a></div>
+<h3><a name="primitives">TableGen primitives</a></h3>
 
 <!-- -------------------------------------------------------------------------->
-<div class="doc_subsubsection"><a name="comments">TableGen comments</a></div>
+<h4><a name="comments">TableGen comments</a></h4>
 
 <div class="doc_text">
 
@@ -284,9 +284,9 @@
 </div>
 
 <!-- -------------------------------------------------------------------------->
-<div class="doc_subsubsection">
+<h4>
   <a name="types">The TableGen type system</a>
-</div>
+</h4>
 
 <div class="doc_text">
 
@@ -344,9 +344,9 @@
 </div>
 
 <!-- -------------------------------------------------------------------------->
-<div class="doc_subsubsection">
+<h4>
   <a name="values">TableGen values and expressions</a>
-</div>
+</h4>
 
 <div class="doc_text">
 
@@ -434,9 +434,9 @@
 </div>
 
 <!-- ======================================================================= -->
-<div class="doc_subsection">
+<h3>
   <a name="classesdefs">Classes and definitions</a>
-</div>
+</h3>
 
 <div class="doc_text">
 
@@ -476,9 +476,9 @@
 </div>
 
 <!---------------------------------------------------------------------------->
-<div class="doc_subsubsection">
+<h4>
   <a name="valuedef">Value definitions</a>
-</div>
+</h4>
 
 <div class="doc_text">
 
@@ -492,9 +492,9 @@
 </div>
 
 <!-- -------------------------------------------------------------------------->
-<div class="doc_subsubsection">
+<h4>
   <a name="recordlet">'let' expressions</a>
-</div>
+</h4>
 
 <div class="doc_text">
 
@@ -519,9 +519,9 @@
 </div>
 
 <!-- -------------------------------------------------------------------------->
-<div class="doc_subsubsection">
+<h4>
   <a name="templateargs">Class template arguments</a>
-</div>
+</h4>
 
 <div class="doc_text">
 
@@ -610,9 +610,9 @@
 </div>
 
 <!-- -------------------------------------------------------------------------->
-<div class="doc_subsubsection">
+<h4>
   <a name="multiclass">Multiclass definitions and instances</a>
-</div>
+</h4>
 
 <div class="doc_text">
 
@@ -773,14 +773,14 @@
 </div>
 
 <!-- ======================================================================= -->
-<div class="doc_subsection">
+<h3>
   <a name="filescope">File scope entities</a>
-</div>
+</h3>
 
 <!-- -------------------------------------------------------------------------->
-<div class="doc_subsubsection">
+<h4>
   <a name="include">File inclusion</a>
-</div>
+</h4>
 
 <div class="doc_text">
 <p>TableGen supports the '<tt>include</tt>' token, which textually substitutes
@@ -797,9 +797,9 @@
 </div>
 
 <!-- -------------------------------------------------------------------------->
-<div class="doc_subsubsection">
+<h4>
   <a name="globallet">'let' expressions</a>
-</div>
+</h4>
 
 <div class="doc_text">
 
@@ -865,7 +865,7 @@
 </div>
 
 <!-- *********************************************************************** -->
-<div class="doc_section"><a name="codegen">Code Generator backend info</a></div>
+<h2><a name="codegen">Code Generator backend info</a></h2>
 <!-- *********************************************************************** -->
 
 <div class="doc_text">
@@ -882,7 +882,7 @@
 </div>
 
 <!-- *********************************************************************** -->
-<div class="doc_section"><a name="backends">TableGen backends</a></div>
+<h2><a name="backends">TableGen backends</a></h2>
 <!-- *********************************************************************** -->
 
 <div class="doc_text">