Replace uses of "title" style with "command"

Replace uses of "title" style with "command"

Currently the "title" style is only used when printing command names.
The "title" name itself is probably a misnomer, but meanwhile this
patch changes the existing uses to instead use the new "command" style
for consistency.

The "title" style is not removed; see the next patch.

Reviewed-By: Keith Seitz <keiths@redhat.com>
Approved-By: Andrew Burgess <aburgess@redhat.com>