fix typo

Author: maximebedard

opentelemetry-appender-tracing/examples/basic.rs

@@ -25,7 +25,7 @@ fn main() {
 
     info_span!("my-span").in_scope(|| {
         info!(target: "my-system", "an info log");
-    })
+    });
 
     error!(name: "my-event-name", target: "my-system", event_id = 20, user_name = "otel", user_email = "[email protected]");
     drop(provider);