cars196 link broken - needs updating

[Tejas-Beedkar]

Short description
The path of the cars196 database has changed. In the file:

Line 22: _URL = 'http://imagenet.stanford.edu/internal/car196/

should be updated to
Line22: _URL = 'http://ai.stanford.edu/~jkrause/car196/'

Reproduction instructions
Env - Google Colab Pro

      import tensorflow_datasets as tfds
      ds = tfds.load("cars196", split='train', shuffle_files=True)

Log:
DownloadError: Failed to get url https://image-net.org/internal/car196/cars_test.tgz. HTTP code: 404.

[NikhilBartwal]

Hey @Tejas-Beedkar, this issue was recently detected and PR #3197 has been made to address this.
You can use the dataset in the updated tfds-nightly once the PR gets merged.

@Conchylicultor There has been multiple issues for the cars196 dataset. Would be great if you could have a look at the PR. Thanks!

[Tejas-Beedkar]

Thanks Nikhil. I gave a approval for the review in PR #3197 assuming the system will filter me out if I am not supposed to.
I verified that the currently nightly build is not updated:

!pip install -q tfds-nightly tensorflow matplotlib
import tensorflow_datasets as tfds
ds = tfds.load("cars196", split='train', shuffle_files=True)

I will try again tomorrow. Thanks for your help!

[DevNachi]

The path of the cars196 database has not yet been updated.