Update URLs in catalog.json to point to www.schemastore.org instead of json.schemastore.org

[madskristensen]

Description of the feature / enhancement.

Since we are still taking traffic to json.schemastore.org on the old hoster, we need to update the catalog, so it no longer points to that subdomain. The old hoster is to be closed as soon as it's safe to do so.

I'm expecting there is more to it than just updating the schema file.

Are you making a PR for this?

No, someone else must create the PR.

[madskristensen]

@hyperupcall is this just a matter of updating catalog.json or is there more to it?