Update "try Cognitive Services for free" link

Author: v-jaswel

Tutorials/Bing-Image-Search/README.md

@@ -10,7 +10,7 @@ The sample app can:
 * Manage subscription keys
 * Handle errors
 
-To use this app, you must have a valid Azure subscription. If you don't have one, you can [get an account](https://azure.microsoft.com/free/) for free. After you sign up, you can use the subscription key from creating an [Azure Cognitive Services resource](http://docs.microsoft.com/azure/cognitive-services/cognitive-services-apis-create-account) for the Bing Search APIs. 
+To use this app, you must have a valid Azure subscription. If you don't have one, you can visit [the Microsoft Cognitive Services Web site](https://azure.microsoft.com/free/cognitive-services/), create a new Azure account, and try Cognitive Services for free. After you sign up, you can use the subscription key from creating an [Azure Cognitive Services resource](http://docs.microsoft.com/azure/cognitive-services/cognitive-services-apis-create-account) for the Bing Search APIs. 
 
 ## Prerequisites 
 
@@ -34,4 +34,4 @@ To use this app, you must have a valid Azure subscription. If you don't have one
 * See the [single-page webapp tutorial](https://docs.microsoft.com/azure/cognitive-services/bing-image-search/tutorial-bing-image-search-single-page-app) that goes along with this sample.
 * Explore all of the available [Azure Cognitive Services](https://docs.microsoft.com/azure/cognitive-services/).
 * Use [computer vision](https://docs.microsoft.com/azure/cognitive-services/computer-vision/quickstarts-sdk/csharp-analyze-sdk) to quickly analyze an image.
-* View the rest of the [Bing Image Search Documentation](https://docs.microsoft.com/en-us/azure/cognitive-services/bing-image-search/).
+* View the rest of the [Bing Image Search Documentation](https://docs.microsoft.com/en-us/azure/cognitive-services/bing-image-search/).