A little mistake on .page-header (was .page-haeder) #L:1192

Created by: alepee

docs/components.html

@@ -1189,7 +1189,7 @@
     </div>
     <div class="span8">
 <pre class="prettyprint linenums">
-&lt;div class="page-haeder"&gt;
+&lt;div class="page-header"&gt;
   &lt;h1&gt;Example page header&lt;/h1&gt;
 &lt;/div&gt;
 </pre>