Tiny fixes to some demos

[CatalinaAlbornoz]

fixed link to hf_state in tutorial_vqe.py

[github-actions]

👋 Hey, looks like you've updated some demos!

🐘 Don't forget to update the dateOfLastModification in the associated metadata files so your changes are reflected in Glass Onion (search and recommendations).

Please hide this comment once the field(s) are updated. Thanks!

[Alan-eMartin]

Hey @CatalinaAlbornoz, as we prepare to transition from the v1 demo pipeline to v2, we'll be closing PRs that haven't been touched in several months. The history will be preserved, and you can always reopen them if still relevant. We can help you transition any changes made here, or you can do the same in the new pipeline once we've finished.