CONLL2003 Dataset not available
Thanks for reporting, @omarespejel.

I'm sorry but I can't reproduce the issue: the loading of the dataset works perfecto for me and I can reach the data URL: https://data.deepai.org/conll2003.zip

Might it be due to a temporary problem in the data owner site (https://data.deepai.org/) that is fixed now?
Could you please try loading the dataset again and tell if the problem persists? @omarespejel I'm closing this issue. Feel free to reopen it if the problem persists.
## Describe the bug
[CONLL2003](https://huggingface.co/datasets/conll2003) Dataset can no longer reach 'https://data.deepai.org/conll2003.zip' 
![image](https://user-images.githubusercontent.com/4755430/158084483-ff83631c-5154-4823-892d-577bf1166db0.png)

## Steps to reproduce the bug
```python
from datasets import load_dataset
datasets = load_dataset("conll2003")
```

## Expected results
Download the conll2003 dataset.

## Actual results
Error: `ConnectionError: Couldn't reach https://data.deepai.org/conll2003.zip (error 502)`
