add text to rhf pipeline notebook

[rfl-urbaniak]

• visibility: I had been thinking of this as more of a meta-parameter, but now it's plotted with a coefficient similar to the derived predictor terms in the value function (proximity and trace). How are you interpreting the coefficient on visibility?

[emackev]

Will be closed by https://github.com/BasisResearch/collab-creatures/pull/66

[rfl-urbaniak]

done