docs: update put telnet format

docs/examples/rust/nativeexample/examples/schemaless_insert_telnet.rs

@@ -79,4 +79,4 @@ async fn put_telnet() -> anyhow::Result<()> {
     client.exec(format!("drop database if exists {db}")).await?;
 
     Ok(())
-}
\ No newline at end of file
+}