refactor code

Signed-off-by: NamCaoHai <[email protected]>

Author: CaoHaiNam

pymilvus/client/utils.py

@@ -392,4 +392,4 @@ def convert_to_standard_form(vector_data: Any) -> Any:
     row_stds = np.std(vector_data, axis=1, keepdims=True)
 
     # Standardize each row independently
-    return np.where(row_stds != 0, (vector_data - row_means) / row_stds, vector_data)
+    return np.where(row_stds != 0, (vector_data - row_means) / row_stds, vector_data)