POT file of system-config-printer seems out of date

[Mike FABIAN]

https://translate.stg.fedoraproject.org/translate/system-config-printer/

has the translatable string

“Hight Quality Grayscale”

https://github.com/OpenPrinting/system-config-printer/blob/master/ppdippstr....

has

“ "High Quality Grayscale": _("High Quality Grayscale"), ”

i.e. the typo in the message ID is already fixed in the source, but it is
still in the POT file.