document `replicate.models.predictions.create` method

[zeke]

Followup to #207

[pavansai26]

@zeke can i work on the above one

[zeke]

Thanks for the offer @pavansai26. I'm actually not sure about the state of this method in the Python API client. @mattt what do you think?

[mattt]

replicate.models.predictions.create has been deprecated in favor of an overload to replicate.predictions.create that accepts a model kwarg. This is documented in the README in this section: https://github.com/replicate/replicate-python?tab=readme-ov-file#run-a-model-and-stream-its-output