Update `Wav2Vec2ProcessorWithLM` doc example
# What does this PR do?

The doctest for this doc example starts to fail. Even I roll back to commits a few days ago, it still fails. I think it's a dataset issue, so just updating the expected values.
_The documentation is not available anymore as the PR was closed or merged._<|||||>I would rather make sure that the dataset was indeed changed! But otherwise ok for this<|||||>> I would rather make sure that the dataset was indeed changed! But otherwise ok for this

It's caused by the new release of `datasets==2.11.0` yesterday.<|||||>> It's caused by the new release of datasets==2.11.0 yesterday.

@ydshieh I'm assuming yes, but if we pin to an old version of datasets, do we have the old values? <|||||>> > It's caused by the new release of datasets==2.11.0 yesterday.
> 
> @ydshieh I'm assuming yes, but if we pin to an old version of datasets, do we have the old values?

Yes, that's why I see the issue is coming from the datasets version :-) 