Update Node.JS package references

Author: areddish

articles/cognitive-services/Custom-Vision-Service/node-tutorial-object-detection.md

@@ -27,8 +27,8 @@ This article provides information and sample code to help you get started using
 To install the Custom Vision service SDKs for Node.js, run the following commands:
 
 ```command
-npm install azure-cognitiveservices-customvision-training
-npm install azure-cognitiveservices-customvision-prediction
+npm install @azure/cognitiveservices-customvision-training
+npm install @azure/cognitiveservices-customvision-prediction
 ```
 
 You can download the images with the [Node.js Samples](https://github.com/Azure-Samples/cognitive-services-node-sdk-samples).

articles/cognitive-services/Custom-Vision-Service/node-tutorial.md

@@ -27,8 +27,8 @@ This article provides information and sample code to help you get started using
 To install the Custom Vision service SDK for Node.js, run the following command in PowerShell:
 
 ```powershell
-npm install azure-cognitiveservices-customvision-training
-npm install azure-cognitiveservices-customvision-prediction
+npm install @azure/cognitiveservices-customvision-training
+npm install @azure/cognitiveservices-customvision-prediction
 ```
 
 [!INCLUDE [get-keys](includes/get-keys.md)]