time series error in sci vis tutorial

[aewindle110]

Ivona pointed out that the time series plot of MOANA output in the sci vis tutorial has a mistake. The line monthly_means = region_mean.groupby("date.month").mean() is calculating a climatological mean, so the plotting on the time series isn't accurate. I think it should be changed to dataset_monthly = dataset_phy.resample(date="1M").mean() and that should produce a dataset with 13 months to plot.