Fix Authentification Error while streaming

[hkjeon13]

I fixed a few errors when it occurs while streaming the private dataset on the Huggingface Hub.

from datasets import load_dataset

dataset = load_dataset(<repo_id>, use_auth_token=<private_token>, streaming=True)
for d in dataset['train']:
    print(d)
    break # this is for checking

This code is an example for streaming private datasets.
when the version of the datasets is 2.2.2, it works well but datasets>2.2.2 occurs error like this,

/usr/local/lib/python3.7/dist-packages/aiohttp/client_reqrep.py in raise_for_status(self)
1007 status=self.status,
1008 message=self.reason,
→ 1009 headers=self.headers,
1010 )
1011

ClientResponseError: 401, message='Unauthorized', url=URL('https://huggingface.co/datasets/.../train-00000-of-00001-168b451062c67c34.parquet')

(this is an example on the dataset has parquet extenstion)
It seems that the xisfile module in download/streaming_download_manager.py couldn't recognize the file on "https://huggingface.co/~".

so I add three lines.
With this change, there is no error anymore(but this code is ad-hoc).

[mariosasko]

Hi, thanks for working on this, but the fix for this has already been merged in #4608.