Minor HTML5 code changes.
Closes #167
<!DOCTYPE html>
-<html>
+<html lang="en">
<head>
<!--
This file is part of FFmpeg.
<body onload="init()">
<h1>Introduction</h1>
-
-The scripts in this page are
+<p>The scripts in this page are
<a href="http://en.wikipedia.org/wiki/Bookmarklet">bookmarklets</a>: store
their link version in a bookmark, and later activate the bookmark on a page
-to run the script.
+to run the script.</p>
<h1>TED Talks captions</h1>
-
<p><a id="ted_talks_captions-link" href="#">Get links to the captions</a></p>
<pre id="ted_talks_captions">