Fix some HTML validation errors.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68427 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/BitCodeFormat.html b/docs/BitCodeFormat.html
index 1c87b88..a8c885a 100644
--- a/docs/BitCodeFormat.html
+++ b/docs/BitCodeFormat.html
@@ -500,9 +500,10 @@
 </p>
 
 <div class="doc_code">
-<pre>
-[4<sub>abbrevwidth</sub>, 2<sub>4</sub>, 4<sub>vbr6</sub>, 0<sub>6</sub>, 1<sub>6</sub>, 2<sub>6</sub>, 3<sub>6</sub>]
-</pre>
+<p>
+<tt>[4<sub>abbrevwidth</sub>, 2<sub>4</sub>, 4<sub>vbr6</sub>, 0<sub>6</sub>,
+1<sub>6</sub>, 2<sub>6</sub>, 3<sub>6</sub>]</tt>
+</p>
 </div>
 
 <p>These values are:</p>
@@ -596,9 +597,10 @@
 </p>
 
 <div class="doc_code">
-<pre>
-[Magic<sub>32</sub>, Version<sub>32</sub>, Offset<sub>32</sub>, Size<sub>32</sub>, CPUType<sub>32</sub>]
-</pre>
+<p>
+<tt>[Magic<sub>32</sub>, Version<sub>32</sub>, Offset<sub>32</sub>,
+Size<sub>32</sub>, CPUType<sub>32</sub>]</tt>
+</p>
 </div>
 
 <p>
@@ -643,9 +645,9 @@
 </p>
 
 <div class="doc_code">
-<pre>
-[0x0<sub>4</sub>, 0xC<sub>4</sub>, 0xE<sub>4</sub>, 0xD<sub>4</sub>]
-</pre>
+<p>
+<tt>[0x0<sub>4</sub>, 0xC<sub>4</sub>, 0xE<sub>4</sub>, 0xD<sub>4</sub>]</tt>
+</p>
 </div>
 
 <p>