Improved mentioning of xorriso-tcltk in the online FAQ

doc/faq.wiki

@@ -233,7 +233,9 @@ The xorriso API encapsulates calls to libisofs, libburn, and libisoburn.
 
 An alternative to the xorriso C API is xorriso dialog mode.
 [#xorriso_dialog_mode See below.]
-The script xorriso-tcltk demonstrates this approach. It is part of the
+The script
+[http://libburnia-project.org/browser/libisoburn/trunk/frontend/xorriso-tcltk xorriso-tcltk]
+demonstrates this approach. It is part of the
 libisoburn release tarball and of the GNU xorriso tarball.
 
 The known existing GUIs [http://www.xfce.org/projects/xfburn/ Xfburn],
@@ -286,7 +288,9 @@ xorriso's stdin and stdout. This is more efficient than forking xorriso
 every now and then to perform various commands in order to complete
 complex tasks like image size prediction.
 
-The script xorriso-tcltk demonstrates this approach. It is part of the
+The script
+[http://libburnia-project.org/browser/libisoburn/trunk/frontend/xorriso-tcltk xorriso-tcltk]
+demonstrates this approach. It is part of the
 libisoburn release tarball and of the GNU xorriso tarball.
 
 ===== Why is every second release missing ? ===== #version_numbers