Udate link to RunHouse hardware setup documentation.
# What does this PR do?

The [hardware setup](https://runhouse-docs.readthedocs-hosted.com/en/main/rh_primitives/cluster.html#hardware-setup) link gives a 404 error. Replaced with a [link](https://runhouse-docs.readthedocs-hosted.com/en/latest/api/python/cluster.html#hardware-setup) that points to the latest version of the RunHouse documentation.


## Before submitting
- [ X] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case).



## Who can review?

Documentation: @dongreenberg, @sgugger, @stevhliu and @MKhalusova



_The documentation is not available anymore as the PR was closed or merged._<|||||>Thanks!! I'll update the one in Accelerate too.