message: Update plugins/catalog-backend-module-openapi/README.md
diff: # Catalog Backend Module to resolve $refs in yaml documents
  -This is an extension module to the plugin-catalog-backend plugin, providing an extensions to resolve $refs in yamls documents.
  +This is an extension module to the Catalog backend, providing extensions to resolve $refs in yaml documents.
  With this you can split your yaml documents into multiple files and reference them. They will be bundled, using an UrlReader, during processing and stored as a single specification.
  