With the old Deities hath it long since come to an end:- and verily, a good joyful Deity-end had they!
They did not "begloom" themselves to death- that do people fabricate! On the contrary, they- laughed themselves to death once
on a time!
That took place when the ungodliest utterance came from a God himself- the utterance: "There is but one God! Thou shalt have no
other gods before me!"- -An old grim-beard of a God, a jealous one, forgot himself in such
wise:-
And all the gods then laughed, and shook upon their thrones, and exclaimed: "Is it not just divinity that there are gods, but no God?"
He that hath an ear let him hear.-F. Nietzsche, Also sprach Zarathustra.
This won't answer your typographical question (especially because in German both nouns and names are capitalised) but at least it is a witty way of pointing to one logical problem of having "God" name himself by a noun which stands for a category of beings ("gods"), while his existence as "God" depends on the negation of said category.
Once a "god" becomes "the only god" he becomes ipso facto more than a "god," i.e. not a "god" anymore. He doesn't belong to the god-kind -- nor to any kind for that matter (deus non est in genere). That is the apory which the capital "G" expresses -- but doesn't solve.