Update CITATION.cff to point to arXiv preprint

[navidcy]

https://github.com/CliMA/Oceananigans.jl/blob/77f46f7682b43148012bcf5120d47446323cecb4/CITATION.cff

[giordano]

Also, in

Oceananigans.jl/CITATION.cff

Lines 20 to 22 in 77f46f7

	- family-names: "Edelman"
	given-names: "Adam"
	orcid: "https://orcid.org/0000-0002-9033-165X"

the first name should be "Alan", and the ORCiD is Valentin's, Alan's is https://orcid.org/0000-0001-7676-3133