message: OpenAPI  - add link to the swagger.json
diff: @@ -16,9 +16,15 @@ To add swagger to a `remult` application follow these steps:
  const app = express();
  let api = remultExpress();
  + const swaggerDocument = api.openApiDoc({ title: 'remult-react-todo' });
  + const options = {
  + swaggerOptions: {
  + url: "/api/swagger.json",
  + },
  + };
  app.use(api);
  - app.use('/api/docs', swaggerUi.serve,
  - swaggerUi.setup(api.openApiDoc({ title: 'remult-react-todo' })));
  + app.get("/api/swagger.json", (req, res) => res.json(swaggerDocument));
  + app.use('/api/docs', swaggerUi.serve, swaggerUi.setup(swaggerDocument, options));
  app.listen(3002, () => console.log("Server started"));
  ```
  