message: docs: fix checkOperator processor not to mark interfaces as operators
  Interfaces exported from the `internal/operators` module get marked as operators. Fix this issue by checking the doc type - only docs that originate as functions are operators.
diff: @@ -4,7 +4,7 @@ module.exports = function checkOperator() {
  $runBefore: ['renderDocsProcessor'],
  $process(docs) {
  docs.forEach((doc) => {
  - doc.isOperator = !!(doc.originalModule && doc.originalModule.startsWith('internal/operators'));
  + doc.isOperator = !!(doc.originalModule?.startsWith('internal/operators') && doc.docType === 'function');
  });
  },
  };
  