DOC: Update generate_pip_deps_from_conda.py #36494
- [x] closes #36494
- [ ] tests added / passed
- [ ] passes `black pandas`
- [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [ ] whatsnew entry

Sorry @dishak331 , it looks like #36496 was already opened first - lots of other open issues here to take though if you want to contribute :) okay