Update `xor_tydi_qa` url to v1.1
Just noticed while 
```load_dataset('local_path/datastes/xor_tydi_qa')``` works,
```load_dataset('xor_tydi_qa')``` 
outputs an error: 
`
FileNotFoundError: Couldn't find file at https://nlp.cs.washington.edu/xorqa/XORQA_site/data/xor_dev_retrieve_eng_span.jsonl
`
(the old url)

I tired clearing the cache `.cache/huggingface/modules` and `.cache/huggingface/datasets`, didn't work.

Anyone know how to fix this? Thanks. It seems like the error is not on your end. By default, the lib tries to download the version of the dataset script that matches the version of the lib, and that version of the script is, in your case, broken because the old URL no longer works. Once this PR gets merged, you can wait for the new release or set `script_version` to `"master"` in `load_dataset` to get the fixed version of the script. @mariosasko Thanks! It works now.

Pasting the docstring here for reference.
```
    script_version (:class:`~utils.Version` or :obj:`str`, optional): Version of the dataset script to load:

        - For canonical datasets in the `huggingface/datasets` library like "squad", the default version of the module is the local version fo the lib.
          You can specify a different version from your local version of the lib (e.g. "master" or "1.2.0") but it might cause compatibility issues.
        - For community provided datasets like "lhoestq/squad" that have their own git repository on the Datasets Hub, the default version "main" corresponds to the "main" branch.
          You can specify a different version that the default "main" by using a commit sha or a git tag of the dataset repository.
```
Branch name didn't work, but commit sha works. Regarding the issue you mentioned about the `--ignore_verifications` flag, I think we should actually change the current behavior of the `--save_infos` flag to make it ignore the verifications as well, so that you don't need to specific `--ignore_verifications` in this case. @lhoestq I realized I forgot to change this:

https://github.com/huggingface/datasets/blob/fdbf5a97d3393f4a91e4cddcabe364029508f7ce/datasets/xor_tydi_qa/xor_tydi_qa.py#L72-L73

What should I do? Oh indeed. Please open a PR to change this. This should be 1.1.0
The dataset is updated and the old url no longer works. So I updated it.

I faced a bug while trying to fix this. Documenting the solution here. Maybe we can add it to the doc (`CONTRIBUTING.md` and `ADD_NEW_DATASET.md`).
> And to make the command work without the ExpectedMoreDownloadedFiles error, you just need to use the --ignore_verifications flag.
https://github.com/huggingface/datasets/issues/2076#issuecomment-803904366