Update README.md

Author: al3xne

ai-and-app-modernisation/ai-services/generative-ai-service/vision-genai/README.md

@@ -1,4 +1,4 @@
-# Summarize Image using OCI AI Vision Service and OCI Generative AI Service
+# Describe an image using OCI AI Vision Service and OCI Generative AI Service
 
 ## Introduction
 In this article, we'll explore how to describe an image using OCI AI Vision Service and OCI Generative AI Service.
@@ -86,4 +86,4 @@ Copyright (c) 2024 Oracle and/or its affiliates.
 Licensed under the Universal Permissive License (UPL), Version 1.0.
 
 See [LICENSE](https://github.com/oracle-devrel/technology-engineering/blob/main/LICENSE) for more details.
-	
+