problems to do batch predictions follow the docs

[alefhsousa]

https://github.com/GoogleCloudPlatform/python-docs-samples/blob/master/tables/automl/automl_tables_predict.py

Did you change the file? If so, how?

I fixed the problems using the named paremeters. This PR #2501 close the problem

Describe the issue

Today when we try to use the function batch_predict follow the docs we receive and error saying: the paramaters should be a pandas.Dataframe it’s happens because the first parameter of the function batch_predict is a pandas.Dataframe. To solve this problem we need to use de named parameters of python.

[leahecole]

hi @sirtorry - PTAL - reassign this issue AND the linked PR to a teammate if needed.

[leahecole]

Merged #2501 which fixes this - thanks for the fix!!