chore: fix comment

src/server.rs

@@ -660,7 +660,7 @@ async fn transfer<I, O>(inbound: I, outbound: O) -> Result<()>
 
     let (mut ri, mut wi) = tokio::io::split(inbound);
     let (mut ro, mut wo) = tokio::io::split(outbound);
-    // IO copy timeout 12 HOURS
+    // IO copy timeout 6 HOURS
     let tcp_io_copy_timeout = Duration::from_secs(6 * 3600);
     let client_to_server = async move {
         // let copy_result = time::timeout(tcp_io_copy_timeout, tokio::io::copy(&mut ri, &mut wo));