Prevent empty help handbook from populating the main handbook table of contents.

kbugbuster/kbugbuster.desktop

@@ -2,7 +2,11 @@
 Type=Application
 Exec=kbugbuster -caption "%c" %i %m
 Icon=kbugbuster
-DocPath=kbugbuster/index.html
+# Restore the following key and remove this comment when a help handbook
+# is written. Disabling this key prevents populating the main handbook
+# table of contents and a resulting error message of
+# 'There is no documentation available for /xyz/index.html.'
+# DocPath=kbugbuster/index.html
 GenericName=TDE Bug Management
 GenericName[af]=TDE Fout Bestuuring
 GenericName[bg]=Управление на грешки - TDE