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/tutorial/OCamlLangImpl4.html b/docs/tutorial/OCamlLangImpl4.html
index 2219f3a..e424045 100644
--- a/docs/tutorial/OCamlLangImpl4.html
+++ b/docs/tutorial/OCamlLangImpl4.html
@@ -12,7 +12,7 @@
 
 <body>
 
-<div class="doc_title">Kaleidoscope: Adding JIT and Optimizer Support</div>
+<h1>Kaleidoscope: Adding JIT and Optimizer Support</h1>
 
 <ul>
 <li><a href="index.html">Up to Tutorial Index</a></li>
@@ -37,7 +37,7 @@
 </div>
 
 <!-- *********************************************************************** -->
-<div class="doc_section"><a name="intro">Chapter 4 Introduction</a></div>
+<h2><a name="intro">Chapter 4 Introduction</a></h2>
 <!-- *********************************************************************** -->
 
 <div class="doc_text">
@@ -52,8 +52,7 @@
 </div>
 
 <!-- *********************************************************************** -->
-<div class="doc_section"><a name="trivialconstfold">Trivial Constant
-Folding</a></div>
+<h2><a name="trivialconstfold">Trivial Constant Folding</a></h2>
 <!-- *********************************************************************** -->
 
 <div class="doc_text">
@@ -148,8 +147,7 @@
 </div>
 
 <!-- *********************************************************************** -->
-<div class="doc_section"><a name="optimizerpasses">LLVM Optimization
- Passes</a></div>
+<h2><a name="optimizerpasses">LLVM Optimization Passes</a></h2>
 <!-- *********************************************************************** -->
 
 <div class="doc_text">
@@ -283,7 +281,7 @@
 </div>
 
 <!-- *********************************************************************** -->
-<div class="doc_section"><a name="jit">Adding a JIT Compiler</a></div>
+<h2><a name="jit">Adding a JIT Compiler</a></h2>
 <!-- *********************************************************************** -->
 
 <div class="doc_text">
@@ -486,7 +484,7 @@
 </div>
 
 <!-- *********************************************************************** -->
-<div class="doc_section"><a name="code">Full Code Listing</a></div>
+<h2><a name="code">Full Code Listing</a></h2>
 <!-- *********************************************************************** -->
 
 <div class="doc_text">