config.json not found when loading fasttext-language-id model
## Environment info
<!-- You can run the command `transformers-cli env` and copy-and-paste its output below.
     Don't forget to fill out the missing fields in that output! -->

- `transformers` version: 4.1.1
- Platform: Linux-5.4.0-60-generic-x86_64-with-glibc2.10
- Python version: 3.8.5
- PyTorch version (GPU?): not installed (NA)
- Tensorflow version (GPU?): 2.3.1 (True)
- Using GPU in script?: Yes
- Using distributed or parallel set-up in script?: No

### Who can help
@julien-c 

## Information

Model I am using (Bert, XLNet ...): [julien-c/fasttext-language-id](https://huggingface.co/julien-c/fasttext-language-id)

The problem arises when using:
* [x] the official example scripts: (give details below)
* [ ] my own modified scripts: (give details below)

The tasks I am working on is:
* [ ] an official GLUE/SQUaD task: (give the name)
* [x] my own task or dataset: (give details below)

## To reproduce

Steps to reproduce the behavior:

```
from transformers import AutoTokenizer, AutoModel
tokenizer = AutoTokenizer.from_pretrained("julien-c/fasttext-language-id")
model = AutoModel.from_pretrained("julien-c/fasttext-language-id")
```

Which returns the following error:
```
404 Client Error: Not Found for url: https://huggingface.co/julien-c/fasttext-language-id/resolve/main/config.json
```

## Expected behavior
The model should load or the config file should be present

Hi @nbeuchat this is a fasttext model, not a `transformers` model, so you can't load it that way.

I've updated the main button on the webpage to make it clearer that you need to use the model in fasttext:

<img width="1067" alt="Screenshot 2021-01-11 at 19 21 07" src="https://user-images.githubusercontent.com/326577/104222282-11d03600-5410-11eb-9b03-307fc776f197.png">
<img width="885" alt="Screenshot 2021-01-11 at 19 21 56" src="https://user-images.githubusercontent.com/326577/104222284-14329000-5410-11eb-842a-05fa8e05c1ca.png">


<|||||>Also cc'ing @thomwolf and @celebio <3<|||||>Got it, thanks for the info and for the quick update! <|||||>This issue has been automatically marked as stale because it has not had recent activity. If you think this still needs to be addressed please comment on this thread.

Please note that issues that do not follow the [contributing guidelines](https://github.com/huggingface/transformers/blob/master/CONTRIBUTING.md) are likely to be ignored.