Issue on docs

[AgeBeeTen]

Path: /statsforecast/docs/getting-started/2_Getting_Started_complete

Hi,
I followed the 'End to End Walkthrough' [(https://nixtlaverse.nixtla.io/statsforecast/docs/getting-started/2_Getting_Started_complete)] and found an error in the following line:

evaluation_df = evaluate_cv(cv_df, mse)

The error is;
KeyError: "['unique_id'] not found in axis"

Probably, there is the column ['unique_id'] missing within the axis=1 (as a column). The unique_id column is there but only as the index column.

Thanks for your help.

Best regards, Harald