Follow up cleanup for T396807.
We should remove references to www.wikimedia.org (which does not actually have APIs and has special case config). In deployment-charts, rest-gateway maps (www\.)?wikimedia\.org/v1/ to www.wikimedia.org/api/restbase_specs/rest_v1-wikimedia.json, which lies in docroot/wwwportal rather than docroot/standard-docroot with the rest of the spec files. We should:
- Change wgRestSandboxSpecs to use https://wikimedia.org/api/rest_v1/?spec
- Copy docroot/wwwportal/api/restbase_specs/rest_v1-wikimedia.json to docroot/standard-docroot/api/restbase_specs/rest_v1-wikimedia.json with the other json files.
- Simplify the spec-json-wikimedia route in rest-gateway to remove the www.wikimedia.org case and set "to" to meta.wikimedia.org
- Remove docroot/wwwportal/api/restbase_specs/rest_v1-wikimedia.json