Use /metrics route

src/metrics.rs

@@ -20,7 +20,7 @@ pub fn init_metrics() {
 }
 
 pub async fn serve() {
-    let app = Router::new().route("/", get(metrics));
+    let app = Router::new().route("/metrics", get(metrics));
     let addr = SocketAddr::from(([127, 0, 0, 1], 31755));
 
     axum::Server::bind(&addr)