`4. Color preservation` from `image processing in 3 modules` seems outdated

[HobbyProgrammer]

I was just following the image processing in 3 modules section. In step 4. Color preservation, it says I can change the preserve chrominance setting in the options tab. However, there is no such setting in the options tab. I played around a bit and found that the setting appears if I change the color science from v7 (2023) to v6 (2022). I guess this part of the manual is outdated.

Here is the relevant section in the repo: https://github.com/darktable-org/dtdocs/blob/master/content/overview/workflow/process.md?plain=1#L115

[elstoc]

Good spot, thanks. Will take a look when I get a moment, but I do recall that this was changed in the latest version of filmic. This process section is bound to get missed with those changes.