I see when I looked at the posted url it is the repo for the part itself. The fritzing part is in
as Fritzing_Parts/products/13279_sfe_large_digit_driver.fzpz
which is a fritzing part file. As noted you will need to either extract that particular file from the repo or (probably easier) load the whole repo. There are instructions on how to do that on the Sparkfun site as I recall.
Peter