get_quote_history获取道琼斯工业指数、纳斯达克指数历史数据不正确

code=['DJIA','SPX','IXIC']
df=ef.stock.get_quote_history(code,beg='20100101',end='20220722')
获取的道琼斯工业指数、纳斯达克指数历史数据不正确

Start at the Python entry point ef.stock.get_quote_history shown in the issue and trace how DJIA and IXIC symbols are handled for the supplied date range. Compare the returned historical data with a trusted reference, then add or update a focused regression test; done means the affected indices return correct data for the example request.

Written by the indexing model from the issue text.