Update app.py

app.py

@@ -654,7 +654,7 @@ def handle_commit_file_changes(hf_api_key_ui, ui_space_name_part, ui_owner_name_
                  "is_binary": False,
                  "is_structure_block": False
              })
-             parsed_code_blocks_state_cache.sort(key=lambda b: (0, b["filename"]) if b.get("is_structure_block") else (1, b["filename"))
+             parsed_code_blocks_state_cache.sort(key=lambda b: (0, b["filename"]) if b.get("is_structure_block") else (1, b["filename"])
 
         _formatted_md_out, _detected_preview_out, _download_btn_out = _generate_ui_outputs_from_cache(owner_to_use, ui_space_name_part)