Add syntax highlighting

questions/qa-changing-encoding.en.html

@@ -37,7 +37,9 @@
 <script src="../javascript/boilerplate-text/boilerplate-en.js"></script><!--TRANSLATORS must change -en to the subtag for their language!-->
 <script src="../javascript/doc-structure/article.js"> </script>
 <script src="../javascript/articletoc-html5.js"></script>
+<script src="../javascript/prism.js"></script>
 <link rel="stylesheet" href="../style/article-2016.css" />
+<link rel="stylesheet" href="../style/prism.css" type="text/css" />
 <link rel="copyright" href="#copyright"/>
 <!--[if lt IE 9]><script src="http://html5shim.googlecode.com/svn/trunk/html5.js"></script><![endif]-->
 </head>
@@ -89,7 +91,7 @@ <h3 id="declare"><a href="#declare">Step 2: Declare the encoding in your page</a
       your page (or add one if you don't already declare it).</p>
     <p>In its simplest form, this looks as follows, and should come at the beginning of the <code class="kw" translate="no">head</code> element in your HTML code.</p>
     <figure class="example">
-    <p><code translate="no">&lt;meta charset=&quot;utf-8&quot;/&gt;</code></p>
+    <pre><code class="language-html" translate="no">&lt;meta charset=&quot;utf-8&quot;/&gt;</code></pre>
     </figure>
   </section>