called out the explicit models + some docs/links

[maxandersen]

wanted to just add links to the openai model config keys but then saw all the repeated "model" in docs that I was not finding when searching for i.e. "moderation model" so started adding them.

but then realized this will have to be duplicated for all the various models....not sure if any better way but at least with this ctrl+F works for me :)

[geoand]

This needs a formatting fix

[geoand]

Let's close this as it is really out of date