Update json.test.js

tests/json.test.js

@@ -81,6 +81,10 @@ t("All files should have the required fields", (t) => {
 });
 
 t("All files should have valid optional owner fields", (t) => {
+    const files = fs.readdirSync(domainsPath).filter(file => {
+    const filePath = path.join(domainsPath, file);
+    return fs.lstatSync(filePath).isFile(); // Only include files
+    });
     files.forEach((file) => {
         const data = fs.readJsonSync(path.join(domainsPath, file));