Clarified use of reinforcement learning

Clarified that Personalizer is using Reinforcement Learning instead of machine learning.

Author: bahree

articles/cognitive-services/personalizer/where-can-you-use-personalizer.md

@@ -8,7 +8,7 @@ ms.date: 02/18/2020
 
 Use Personalizer in any situation where your application needs to select the correct action (content) to display - in order to make the experience better, achieve better business results, or improve productivity.
 
-Personalizer uses machine learning to select which action (content) to show the user. The selection can vary drastically depending on the quantity, quality, and distribution of data sent to the service.
+Personalizer uses reinforcement learning to select which action (content) to show the user. The selection can vary drastically depending on the quantity, quality, and distribution of data sent to the service.
 
 ## Example use cases for Personalizer
 
@@ -102,4 +102,4 @@ In some architectures, the above sequence may be hard to implement. In that case
 
 ## Next steps
 
-[Ethics & responsible use](ethics-responsible-use.md).
+[Ethics & responsible use](ethics-responsible-use.md).