Update Tycho tutorial link to EclipseCon 2013
diff --git a/documentation.php b/documentation.php
index 597857f..625bb58 100644
--- a/documentation.php
+++ b/documentation.php
@@ -18,7 +18,7 @@
 <p>The documentation of the Tycho project is maintained in the <a href="http://wiki.eclipse.org/Category:Tycho">Eclipse wiki</a>.</p>
 
 <p>
-For an introduction to Tycho , we recommend following the <a href="http://www.eclipsecon.org/europe2012/sessions/building-eclipse-plugins-and-rcp-applications-tycho">EclipseCon Tycho Tutorial</a>.   
+For an introduction to Tycho , we recommend following the <a href="http://www.eclipsecon.org/2013/sessions/building-eclipse-plug-ins-and-rcp-applications-tycho">EclipseCon Tycho Tutorial</a>.   
 </p>
 
 <p>In order to set up Tycho in a Maven build, follow the instructions and examples on the pages