Updated docs to include PredictedLabel member (#4107)

* Fixed build errors resulting from upgrade to VS2019 compilers

* Added additional message describing the previous fix

* Updated docs to include PredictedLabel member

Author: harishsk

docs/api-reference/io-columns-anomaly-detection.md

@@ -3,4 +3,5 @@ The input features column data must be a known-sized vector of <xref:System.Sing
 
 | Output Column Name | Column Type | Description|
 | -- | -- | -- |
-| `Score` | <xref:System.Single> | The non-negative, unbounded score that was calculated by the anomaly detection model.|
+| `Score` | <xref:System.Single> | The non-negative, unbounded score that was calculated by the anomaly detection model.|
+| `PredictedLabel` | <xref:System.Boolean> | The predicted label, based on the threshold. A score higher than the threshold maps to `true` and a score lower than the threshold maps to `false`. The default threshold is `0.5`.Use <xref:AnomalyDetectionCatalog.ChangeModelThreshold> to change the default value.|