fix: update OpenAPI file links to the latest version

Author: xaviaracil

ob_v3p0/impl/getting-started.md

@@ -617,6 +617,6 @@ token grants, and protected resource endpoint access.
 
 ### Supporting Technical Resources
 
--   [OpenAPI 3.0 JSON File for Open Badges API](https://purl.imsglobal.org/spec/ob/v3p0/schema/openapi/ob_v3p0_oas.json)
--   [OpenAPI 3.0 YAML File for Open Badges API](https://purl.imsglobal.org/spec/ob/v3p0/schema/openapi/ob_v3p0_oas.yaml)
+-   [OpenAPI 3.0 JSON File for Open Badges API](https://purl.imsglobal.org/spec/ob/v3p0/schema/openapi/ob_v3p0_openapi3_v1p0p1.json)
+-   [OpenAPI 3.0 YAML File for Open Badges API](https://purl.imsglobal.org/spec/ob/v3p0/schema/openapi/ob_v3p0_openapi3_v1p0p1.yaml)
 -   [Open Badges 3.0 JSON-LD Context File](https://purl.imsglobal.org/spec/ob/v3p0/context-3.0.3.json)