Update Origin column in table-2

Update concept-automl-forecasting-lags.md
Corrected date in origin column for lag feature

Author: vivek-dani

articles/machine-learning/concept-automl-forecasting-lags.md

@@ -42,7 +42,7 @@ Table 2: Lag featurization for $h=1$ <a name="tbl:classic-lag-1"></a>
 | 3/1/2001   | 20    | 2/1/2001  | 10        | 1       |
 | 4/1/2001   | 30    | 3/1/2001  | 20        | 1       |
 | 5/1/2001   | 40    | 4/1/2001  | 30        | 1       |
-| 6/1/2001   | 50    | 4/1/2001  | 40        | 1       |
+| 6/1/2001   | 50    | 5/1/2001  | 40        | 1       |
 
 Table 2 is generated from Table 1 by shifting the $y_t$ column down by a single observation. We've added a column named `Origin` that has the dates that the lag features originate from. Next, we generate the lagging feature for the forecast horizon $h=2$ only.