Update how-to-train-with-ui.md

Fix broken aka.ms link

Author: Man-MSFT

articles/machine-learning/how-to-train-with-ui.md

@@ -19,7 +19,7 @@ There are many ways to create a training job with Azure Machine Learning. You ca
 
 ## Prerequisites
 
-* An Azure subscription. If you don't have an Azure subscription, create a free account before you begin. Try the [free or paid version of Azure Machine Learning](https://aka.ms/AMLFree) today.
+* An Azure subscription. If you don't have an Azure subscription, create a free account before you begin. Try the [free or paid version of Azure Machine Learning](https://azure.microsoft.com/free/machine-learning/search/) today.
 
 * An Azure Machine Learning workspace. See [Create workspace resources](quickstart-create-resources.md).