MLOPS tutorial enhancements and confusion

(FEED BACK FROM RINO SIMEONE):

A couple of additional comments on the MLOPS tutorial:

> a. in https://training.h2o.ai/webinar/225787 it is confusing the way the two "userId" are used; I would rather explain that the whole idea of the exercise is to use a SINGLE platform e TWO user Id to mimic the dynamics between two people working and sharing a single model, ds1 and ds2...

> b. I would upgrade the picture and the structure to Wave; in fact, while the image at https://h2oai.github.io/tutorials/lms/MLOps%20/intro-to-ml-model-deployment-and-management/img/1a54fc4bdc65ad35.jpg does so, the model in https://h2oai.github.io/tutorials/lms/MLOps%20/intro-to-ml-model-deployment-and-management/img/6c04037ec5875678.jpg does not.  I myself have still to understand how the whole picture vs. for instance the Q Framework, but that is another story...