Fix typo

[FinBird]

不存在字段 'auth_data'，只有'bgm_auth_data'
未修改前报错信息：

Traceback (most recent call last):
File "bili2bgm.py", line 44, in
loop.run_until_complete(main())
File "D:\anaconda3\lib\asyncio\base_events.py", line 579, in run_until_complete
return future.result()
File "bili2bgm.py", line 38, in main
await get_and_update(bili2bgm_map, bili_auth_data, BILI_UID, bgm_auth_data)
File "update.py", line 241, in get_and_update
await data.update_bgm_data_task
File "update.py", line 137, in update_bgm_data
await gather(*data.update_one_bgm_data_tasks)
File "update.py", line 92, in update_one_bgm_data
lambda: client.post(
File "utilities.py", line 67, in try_for_times_async_chain
result = await func()
File "update.py", line 95, in
headers={'Authorization': data.auth_data}
AttributeError: 'types.SimpleNamespace' object has no attribute 'auth_data'

[NKID00]

非常感谢！