add hla2627 to navigation bar

Author: tobideusser

_includes/navigation.html

@@ -26,6 +26,7 @@
           <a href="{{ site.baseurl }}/teaching/mmdii26/">MMD II (SS 26)</a>
           <a href="{{ site.baseurl }}/teaching/xai26/">Lab: XAI (SS 26)</a>
           <a href="{{ site.baseurl }}/teaching/dsma26/">Seminar: DSMA (SS 26)</a>
+          <a href="{{ site.baseurl }}/teaching/hla2627/">Lab: HLA (WS 26/27)</a>
           <a href="{{ site.baseurl }}/teaching/theses">Theses</a>
         </div>
       </li>