Harmonize error message while waiting for storage connection. (MaterializeInc#11719)

This makes the form of the error message match the one for the
coordinator connection. E.g.

```
listening for coordinator connection on 0.0.0.0:2100...
```

vs.

```
listening for storage connection on 0.0.0.0:2101...
```

Author: umanwizard

src/storage/src/boundary/tcp_boundary.rs

@@ -112,8 +112,8 @@ pub mod server {
         info!("About to bind to {addr}");
         let listener = TcpListener::bind(addr).await?;
         info!(
-            "listening for storage connection on  {:?}...",
-            listener.local_addr()
+            "listening for storage connection on {}...",
+            listener.local_addr()?
         );
 
         let thread = mz_ore::task::spawn(