Add SteelDigitalOntology as subnamespace for w3id.org/stahl

[Kibubu]

No description provided.

[dgarijo]

@Kibubu,
you are not listed as a maintainer of the root w3id. Can you please add yourself as a contributor and make sure that @meterialdigital reviews this PR? Thanks in advance

[Kibubu]

I'm a bit lost now, since I created the initial PR #2348 for the stahl namespace.
To be hones, I'm not sure how to add myself to the list of maintainers for root w3id. Did I miss something in the docs or should I add myself to the README?

Also, I am a member of @materialdigital https://github.com/orgs/materialdigital/people

[dgarijo]

Add yourself to the readme, please. That should be enough, since you did the initial PR.

[dgarijo]

Any updates, @Kibubu ?

[dgarijo]

@Kibubu I detected a weird redirect. Please confirm that is what you want and if that's the case I will merge.