fix: update doc example
@@ -125,7 +125,7 @@ impl From<tonic::Status> for Error {
///
/// // results is a stream of RecordBatches
/// let query_results = client
-/// .sql("my_namespace".into(), "select * from cpu_load".into())
+/// .sql("my_namespace", "select * from cpu_load")
/// .await
/// .expect("query request should work");
///
