Optimized embedded tutorial for mobile

Change-Id: I0b345c75cbd68bd1f1205a313ddbb7ecd94b58c3
diff --git a/templates/doc/data/annotation.html.ep b/templates/doc/data/annotation.html.ep
index 032375c..dbbd534 100644
--- a/templates/doc/data/annotation.html.ep
+++ b/templates/doc/data/annotation.html.ep
@@ -1,6 +1,6 @@
 % layout 'main', title => 'KorAP: Annotations';
 
-<h2>Annotations</h2>
+<h2 id="tutorial-top">Annotations</h2>
 
 <p>KorAP provides access to multiple levels of annotations originating from multiple resources, so called <em>foundries</em>.</p>