[why]
The script shows
# [Nerd Fonts] Generating cask for: .
for any font it processes.
[how]
Well, the variable naming is a bit strange, maybe that is the reason for
the bug? We already have the font name in another variable, use that.
Signed-off-by: Fini Jastrow <ulf.fini.jastrow@desy.de>