I clicked through some random ones which all worked, can you describe the ones that didn't work for you and how they failed?

from emory (3 days.. stretching it ;P) the first block of links taking you to PEP's were broken, and I spot checked 'other links' down the page.

Yeah I had to find a working one low down in the page and edit the PEP number: https://peps.python.org/pep-0790/

Yeah Sentinel and lazy imports just took me to the bottom of the page. I had to find them the old fashioned way

Some should now be fixed as the documentation pages get updated to point to 3.15.