[Documentation] No examples for RAPS

[vtaquet]

Hey guys !

Thanks for keeping working on MAPIE with these great new features ! I noticed that the RAPS method hasn't been shown in any examples of the documentation (tutorial, examples, notebooks). I modified some notebooks for a presentation, I'll try to add the method to the existing examples although the difference is not so striking with a low number of classes. It would be great to add a simple example with many classes.

Bisous