Document fragmentation of Redux, Redux-Toolkit, React-Redux

[ryota-murakami]

During upgrade work for my RTK & Query starter I want to know official recommended directory structure style.
Firstly I went to Redux-Tookit Docs, there is createSlice() API description and tutorial but I couldn't see bestpractice pert.

Next, I search Google and reach Recommended folder structure for Redux-Toolkit? reddit and answering @markerikson .
He navigated 2 original Redux document links, I also followed that.
https://redux.js.org/style-guide/style-guide#structure-files-as-feature-folders-with-single-file-logic
https://redux.js.org/tutorials/essentials/part-2-app-structure

My concern is Redux-Toolkit best practice written original Redux docs instead of Redux-Toolkit docs is confusable generally.
Why I can't reach Redux-Toolkit at Redux-Toolkit docs?
Why original Redux docs explain well with superset library & API that doesn't exist original Redux?

If you have a any thought or intent, I'm glad to hear that.

[markerikson]

Yeah, I wrote up a long answer over in this issue describing why we have the docs split the way they are:

#2637 (comment)