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/Projects.html b/docs/Projects.html
index d7f4c89..8ba8783 100644
--- a/docs/Projects.html
+++ b/docs/Projects.html
@@ -7,7 +7,7 @@
 </head>
 <body>
 
-<div class="doc_title">Creating an LLVM Project</div>
+<h1>Creating an LLVM Project</h1>
 
 <ol>
 <li><a href="#overview">Overview</a></li>
@@ -30,7 +30,7 @@
 </div>
 
 <!-- *********************************************************************** -->
-<div class="doc_section"><a name="overview">Overview</a></div>
+<h2><a name="overview">Overview</a></h2>
 <!-- *********************************************************************** -->
 
 <div class="doc_text">
@@ -73,9 +73,9 @@
 </div>
 
 <!-- *********************************************************************** -->
-<div class="doc_section">
+<h2>
   <a name="create">Create a Project from the Sample Project</a>
-</div>
+</h2>
 <!-- *********************************************************************** -->
 
 <div class="doc_text">
@@ -145,9 +145,9 @@
 </div>
 
 <!-- *********************************************************************** -->
-<div class="doc_section">
+<h2>
   <a name="source">Source Tree Layout</a>
-</div>
+</h2>
 <!-- *********************************************************************** -->
 
 <div class="doc_text">
@@ -230,9 +230,9 @@
 </div>
 
 <!-- *********************************************************************** -->
-<div class="doc_section">
+<h2>
   <a name="makefiles">Writing LLVM Style Makefiles</a>
-</div>
+</h2>
 <!-- *********************************************************************** -->
 
 <div class="doc_text">
@@ -245,9 +245,9 @@
 </div>
 
 <!-- ======================================================================= -->
-<div class="doc_subsection">
+<h3>
   <a name="reqVars">Required Variables</a>
-</div>
+</h3>
 
 <div class="doc_text">
 
@@ -263,9 +263,9 @@
 </div>
 
 <!-- ======================================================================= -->
-<div class="doc_subsection">
+<h3>
   <a name="varsBuildDir">Variables for Building Subdirectories</a>
-</div>
+</h3>
 
 <div class="doc_text">
 
@@ -294,9 +294,9 @@
 </div>
 
 <!-- ======================================================================= -->
-<div class="doc_subsection">
+<h3>
   <a name="varsBuildLib">Variables for Building Libraries</a>
-</div>
+</h3>
 
 <div class="doc_text">
 
@@ -325,9 +325,9 @@
 </div>
 
 <!-- ======================================================================= -->
-<div class="doc_subsection">
+<h3>
   <a name="varsBuildProg">Variables for Building Programs</a>
-</div>
+</h3>
 
 <div class="doc_text">
 
@@ -368,9 +368,9 @@
 </div>
 
 <!-- ======================================================================= -->
-<div class="doc_subsection">
+<h3>
   <a name="miscVars">Miscellaneous Variables</a>
-</div>
+</h3>
 
 <div class="doc_text">
 
@@ -399,9 +399,9 @@
 </div>
 
 <!-- *********************************************************************** -->
-<div class="doc_section">
+<h2>
   <a name="objcode">Placement of Object Code</a>
-</div>
+</h2>
 <!-- *********************************************************************** -->
 
 <div class="doc_text">
@@ -427,9 +427,9 @@
 </div>
 
 <!-- *********************************************************************** -->
-<div class="doc_section">
+<h2>
   <a name="help">Further Help</a>
-</div>
+</h2>
 <!-- *********************************************************************** -->
 
 <div class="doc_text">