Fix broken link.

Author: joto

docs.html

@@ -99,7 +99,7 @@ <h2>Talks</h2>
         [ <a href="https://media.jochentopf.com/media/2013-09-08-talk-sotm2013-osmium-en-slides.pdf">slides</a> |
           <a href="https://media.jochentopf.com/media/2013-09-08-talk-sotm2013-osmium-en-video.mp4">download video</a> ]
     </li>
-    <li>March 2012 at <a href="https://www.fossgis.de/konferenz/2012/">FOSSGIS 2012</a>, Dessau:</br>
+    <li>March 2012 at <a href="https://fossgis-konferenz.de/2012/">FOSSGIS 2012</a>, Dessau:</br>
         <b>Das Osmium-Framework</b> (in German)
         [ <a href="https://media.jochentopf.com/media/2012-03-21-talk-fossgis2012-osmium-de-slides.pdf">slides</a> |
           <a href="https://media.jochentopf.com/media/2012-03-21-talk-fossgis2012-osmium-de-video.mp4">download video</a> ]