make clear that the readthedocs page is outdated

Hi,
It seems the latest documentation (although I am not clear if ISA version 1.0 or 2.0 should be used) is here:
https://isa-tools.org/isa-api/content/index.html

Search engines mostly return this page:
https://isa-specs.readthedocs.io/en/latest/

Could there be a redirection to the former from the latter? The schemas and nodes are very different between the two

Thanks,
Guillaume