Example dropdown improvement

[gsingh91]

Describe the bug
Not sure if this is a bug, but wanted to capture it here. In the docs page of the API, the drop down under the Examples section has same values ptype for both single and batch predictions.

Expected behavior
Different names for different types of predictions(single/batch etc)

Screenshots

[isabelizimm]

This is coming from the type hint for the endpoint. The way to update this is name is the make a type called "batch" that is equivalent to a ptype (but not a list of ptypes). This seems a bit awkward. A possibility is remove a dictionary as a type hint. Then, there would be no dropdown, and the example would be a list of dicts (which can be used for single or batch prediction). This would better match the R visual API documentation, which has a list.