Update v0.1.0.md

rust/v0.1.0.md

@@ -52,7 +52,7 @@ Note:
 
 - `max_worker_retries` is 3 and `max_total_retries` is 6 by default.
 
-Closing remarks:
+## Closing remarks:
 
 1. Please read the full usage at https://sgl-project.github.io/router/router.html
 2. The feature is still under active improvement, so please don't hesitate to raise issues or submit PRs if you have any suggestions or feedback.