`ml.start_data_frame_analytics` and `ml.stop_data_frame_analytics` APIs include ID parameter twice

[JoshMock]

Code generation for these APIs appears to treat id, and possibly timeout, as possibly provided in both the path and body rather than one or the other.

https://github.com/elastic/elasticsearch-js/blob/HEAD/src/api/api/ml.ts#L4576-L4581

Thanks @miguelgrinberg for catching!