fix statsds prefix

src/bin/serve.rs

@@ -34,7 +34,7 @@ async fn main() -> anyhow::Result<()> {
 
     let statsd = Arc::new(Client::new(
         "127.0.0.1:8125",
-        "commoncrawl_graph_import",
+        "commoncrawl_graph_serve",
         None,
     )?);