update comments in cohen huston

[younesStrittmatter]

update comments to include original regression coefficiants

[github-actions]

This PR causes the following changes to the html docs (ubuntu-latest-3.11):

diff -r docs-base/_downloads/0e250fd5f7fdb8f2faa472e6658bed55/Cohen_Huston1994.py docs-head/_downloads/0e250fd5f7fdb8f2faa472e6658bed55/Cohen_Huston1994.py
27c27
< THRESHOLD = args.threshold  # default is .5
---
> THRESHOLD = args.threshold  # default is .6
488c488,490
<     # -- Regression --
---
>     # -- Regression -- #
>     # Note: Here, we fit the mode to human reaction time data by linear regression.
>     # The regression coefficients used in the Cohen & Huston (1994) paper were: slope=.98, intercept=298

...

See CI logs for the full diff.

[coveralls]

coverage: 84.399% (+0.003%) from 84.396%
when pulling 83058b9 on models-update-docs
into ef26324 on devel.