Description-like attribute values in spectral dataset could maybe adopt a nicer formatting.

[KelSolaar]

Hi,

This is cosmetic, but looking at the model value for this file: https://github.com/ampas/rawtoaces/blob/966db3e785c1dee9e66e9844641360d78dcb495e/data/camera/canon_eos_5d_mark_ii_380_780_5.json#L5

I think we could adopt nicer formatting for it: EOS 5D Mark II vs eos 5d mark ii. It is very easy to come up with the latter from the former but the reverse is not true if not impossible without excessive and unnecessary code.

Cheers,

Thomas