text: Title: --install-hook not working on windows
  Body: `ploomber nb --install-hook` is not working on windows, [I found here](https://stackoverflow.com/questions/20609816/git-pre-commit-hook-is-not-running-on-windows) that the problem may be the shebang but I followed the recommendations and the CI is still broken.
  
  Does anyone with a windows machine want to give it a try?
  
  
  Tasks:
  - [ ] Fix git hook
  - [ ] remove xfail flag in the unit test
  - [ ] delete warning in the documentation saying it doesn't work on windows
  
  Code: https://github.com/ploomber/ploomber/blob/master/src/ploomber/cli/nb.py
  
  Docs: https://github.com/ploomber/ploomber/blob/master/doc/user-guide/editors.rst#using-git-hooks