Update index.js

index.js

@@ -50,7 +50,7 @@ app.get('/', (req, res) => {
 
 app.get('/api-docs.json', (req, res) => {
   res.setHeader('Content-Type', 'application/json');
-  res.send(swaggerSpec);
+  res.send(openapiSpecification);
 });
 
 app.use(async (req, res, next) => {