update link

Author: sdgilley

articles/ai-studio/tutorials/copilot-sdk-build-rag.md

@@ -29,7 +29,7 @@ This tutorial is part two of a three-part tutorial.
 
 * Complete [Tutorial:  Part 1 - Create resources for building a custom chat application with the prompt flow SDK](copilot-sdk-create-resources.md).
 
-* You need a local copy of product data. The [Azure-Samples/rag-data-openai-python-promptflow repository on GitHub](https://github.com/Azure-Samples/rag-data-openai-python-promptflow/) contains sample retail product information that's relevant for this tutorial scenario. [Download the example Contoso Trek retail product data in a ZIP file](https://github.com/Azure-Samples/rag-data-openai-python-promptflow/tree/main/tutorial/data) to your local machine.
+* You need a local copy of product data. The [Azure-Samples/rag-data-openai-python-promptflow repository on GitHub](https://github.com/Azure-Samples/rag-data-openai-python-promptflow/) contains sample retail product information that's relevant for this tutorial scenario. [Download the example Contoso Trek retail product data in a ZIP file](https://github.com/Azure-Samples/rag-data-openai-python-promptflow/blob/main/tutorial/data/product-info.zip) to your local machine.
 
 ## Application code structure