title: Datasets YAML tagging space is down
comments: @lhoestq @albertvillanova `update-task-list` branch does not exist anymore, should point to `main` now i guess Thanks for reporting, fixing it now It's up again :)
body: ## Describe the bug
  The neat hf spaces app for generating YAML tags for dataset `README.md`s is down
  
  ## Steps to reproduce the bug
  1. Visit https://huggingface.co/spaces/huggingface/datasets-tagging
  
  ## Expected results
  There'll be a HF spaces web app for generating dataset metadata YAML
  
  ## Actual results
  There's an error message; here's the step where it breaks:
  
  ```
  Step 18/29 : RUN pip install -r requirements.txt
   ---> Running in e88bfe7e7e0c
  Defaulting to user installation because normal site-packages is not writeable
  Collecting git+https://github.com/huggingface/datasets.git@update-task-list (from -r requirements.txt (line 4))
    Cloning https://github.com/huggingface/datasets.git (to revision update-task-list) to /tmp/pip-req-build-bm8t0r0k
    Running command git clone --filter=blob:none --quiet https://github.com/huggingface/datasets.git /tmp/pip-req-build-bm8t0r0k
    WARNING: Did not find branch or tag 'update-task-list', assuming revision or ref.
    Running command git checkout -q update-task-list
    error: pathspec 'update-task-list' did not match any file(s) known to git
    error: subprocess-exited-with-error
    
    × git checkout -q update-task-list did not run successfully.
    │ exit code: 1
    ╰─> See above for output.
    
    note: This error originates from a subprocess, and is likely not a problem with pip.
  error: subprocess-exited-with-error
  
  × git checkout -q update-task-list did not run successfully.
  │ exit code: 1
  ╰─> See above for output.
  ```
  
  ## Environment info
  
  - Platform: Linux / Brave
  