But as a workaround, add MimeType=x-scheme-handler/ghelp; to the end of your /usr/share/applications/yelp.desktop I don't run ubuntu but this should possibly help you.
But as a workaround, x-scheme- handler/ ghelp; applications/ yelp.desktop
add MimeType=
to the end of your /usr/share/
I don't run ubuntu but this should possibly help you.