excel_util: format code

Signed-off-by: binren <zhangbr@elab-plus.com>

excel_util.py

@@ -198,4 +198,4 @@ if __name__ == '__main__':
     import json
     eu = ExcelUtil(file_name=r'D:\elab\elab_mvp\resources\module.xlsx')
     data = eu.module_behavior_info()
-    print(json.dumps(data, ensure_ascii=False))
+    print(json.dumps(data, ensure_ascii=False))