Now with GNOME 3 style help installed, running 'yelp help:gparted'
results in this error being displayed in yelp:
Page Not Found
The requested page was not found in the document 'help:gparted'.
Where as running 'yelp help:gparted/gparted' correctly displays the
GParted Manual.
Fix by renaming the article tag to the default 'index' that yelp is
expecting when using the new GNOME 3 'help:' prefix.
Closes!24 - Port to GNOME 3 yelp-tools documentation infrastructure