Docs: extend description of derived data naming conventions

[dougollerenshaw]

Closes #231

Extends the discussion about derived asset naming conventions in data_organization.md. Steers users away from simply using 'processed' as a label.

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📚 Documentation preview 📚: https://scicomp-docs--237.org.readthedocs.build/en/237/

[arielleleon]

This is much better, thank you. One small comment

[arielleleon]

Good call regarding the fiber pipeline. I don't want to add project specific logic to pipelines like fiber but if users want to have a process label such as behavior-df, I'm not opposed to that.

[tmchartrand]

this is a pretty big change to not suggest using the generic "processed" at all. I'm not sure the original context of that, so might be helpful to at least document that in this discussion before discarding. do we want to suggest users doing more ad-hoc reprocessing outside of a standard pipeline use that instead of making up new short-names for instance?