Fix download page

Author: gdebunne

doc/download.html

@@ -37,7 +37,7 @@ <h2>GNU LGPL license</h2>
   This code is released under the terms of the <a href="https://www.gnu.org/licenses/lgpl-3.0.en.html">GNU-LGPL</a> license.
 </p>
 
-<div id="download" style="display:none">
+<div>
 	<p>
 		Select your architecture: &nbsp;
 		<a href="installWindows.html"><img src="images/windows.png" width="55" height="54" align="middle" alt="windows"/></a> &nbsp; &nbsp; &nbsp; &nbsp;