Pandas version checks

• I have checked that the issue still exists on the latest versions of the docs on main here

Location of the documentation

https://pandas.pydata.org/docs/user_guide/io.html

Documentation problem

The link for HDF5 data description is broken and leads to a 404 error.

Current HDF5 link

Suggested fix for documentation

I believe a good replacement link would be to this Introduction to HDF5.

I would like to update the documentation with this link and create a pull request.