fix annotationKind

Author: PatrickFarley

articles/cognitive-services/Computer-vision/how-to/model-customization.md

@@ -151,7 +151,7 @@ The `datasets/<dataset-name>` API lets you create a new dataset object that refe
 1. Replace `<endpoint>` with your Computer Vision endpoint.
 1. Replace `<dataset-name>` with a name for your dataset.
 1. Replace `<subscription-key>` with your Computer Vision key.
-1. In the request body, set `"annotationKind"` to either `"MultiClassClassification"` or `"ObjectDetection"`, depending on your project.
+1. In the request body, set `"annotationKind"` to either `"MultiClassClassification"` or `"imageObjectDetection"`, depending on your project.
 1. In the request body, set the `"annotationFileUris"` array to an array of string(s) that show the URI location(s) of your COCO file(s) in blob storage.
 
 ```bash