docs: consolidate html header and footer

add doctype
add character encoding
add missing <head> tag
unify html header and footer

Signed-off-by: Brian Paul <brianp@vmware.com>
diff --git a/docs/devinfo.html b/docs/devinfo.html
index 678e48c..06322d1 100644
--- a/docs/devinfo.html
+++ b/docs/devinfo.html
@@ -1,15 +1,16 @@
-<HTML>
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
+<html lang="en">
+<head>
+  <meta http-equiv="content-type" content="text/html; charset=utf-8">
+  <title>Development Notes</title>
+  <link rel="stylesheet" type="text/css" href="mesa.css">
+</head>
+<body>
 
-<TITLE>Development Notes</TITLE>
-
-<link rel="stylesheet" type="text/css" href="mesa.css"></head>
-
-<BODY>
-
-<H1>Development Notes</H1>
+<h1>Development Notes</h1>
 
 
-<H2>Adding Extentions</H2>
+<h2>Adding Extentions</h2>
 
 <p>
 To add a new GL extension to Mesa you have to do at least the following.