[Docs] Cox_Process_Example - two issues

[noamsgl]

📚 Documentation/Examples

** Is there documentation missing? examples/07_Pyro_Integration/Cox_Process_Example.ipynb does not support multiple running of the notebook (consecutive runs result in incorrect inference). Solution is to add pyro.clear_param_store().

** Is documentation wrong? ** examples/07_Pyro_Integration/Cox_Process_Example.ipynb labels "True" and "Pred" in last plot are reversed.

** Think you know how to fix the docs? ** (If so, we'd love a pull request from you!)

• Link to GPyTorch documentation
• Link to GPyTorch examples