Merge pull request #120399 from hyoshioka0128/patch-801

Typo "Azure Open AI"→"Azure OpenAI"

Author: Jak-MS

articles/machine-learning/how-to-use-retrieval-augmented-generation.md

@@ -24,7 +24,7 @@ In this tutorial, you'll learn how to use RAG by creating a prompt flow. A promp
 
 * An Azure subscription. If you don't have an Azure subscription, create a [free account](https://azure.microsoft.com/free/).
 
-* Access to Azure Open AI. 
+* Access to Azure OpenAI. 
 
 * Enable prompt flow in your Azure Machine Learning workspace