Proof-read and clarify v1 to v2 transition notebook.

[vpratz]

In my opinion, the notebook would benefit from more details, so feel free to add things @LarsKue @stefanradev93.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

see 8 files with indirect coverage changes

[LarsKue]

Thank you for the updates. Overall, I think it looks good.

It may be nice if we mentioned that the Adapter is a nicer way to specify what used to be a Configurator previously. Users no longer have to override the whole default pipeline, and we provide a lot of functionality users can piece together as they like instead of simply having to give us one big function that does everything.

There is also a typo: "convencient".

[vpratz]

Thanks a lot for the proof-reading. I have added a short comment on the configurator, to make the connection clearer, but feel free to extend.