Correction for the docstring for judgyprophet.fit()

The docstring for judgyprophet.fit() states:

```
:param actuals: A pandas series of the actual timeseries to forecast.
            It is assumed there are no missing data points,
            i.e. x[1] is the observation directly following x[0], etc.
```

But I believe this argument should be named ```data```, not ```actuals``` in the docstring. Thanks!