Add design tokens 2025.10

[kaelig]

Also available at https://www.designtokens.org/tr/2025.10/

[ianbjacobs]

Hi @kaelig,

In our documentation we indicate what we expect the "this version" URL to be. Your specification(s) use the "latest version" URL, which is where people will find something newer in the future. Can you update the document to use the "this version" URL for the final spec that will live on w3.org, and the "latest version" could, for example, go to designtokens.org.

Also, the document appears to be missing the proper copyright statement.

Please see the report requirements for the full list of requirements.