Update README.md - new article for useful links

Author: al3xne

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

@@ -39,6 +39,7 @@ Reviewed: 30.01.2024
 - [Oracle Embeds Generative AI Across the Technology Stack to Enable Enterprise AI Adoption at Scale](https://www.oracle.com/news/announcement/oracle-announces-availability-oci-generative-ai-service-2024-01-23/)
 - [Implement Oracle Cloud Infrastructure Generative AI based on Cohere Large Language Model - Blog & Architecture](https://docs.oracle.com/en/solutions/oci-generative-ai-llm/index.html#GUID-76987F35-F646-40CF-9CF2-42724BA57191)
 - [Generative AI Chatbot using LLaMA-2, Qdrant, RAG, LangChain & Streamlit](https://blogs.oracle.com/ai-and-datascience/post/ai-chatbot-llama2-qdrant-rag-langchain-streamlit)
+- [Developing AI applications with OCI Generative AI and LangChain](https://blogs.oracle.com/ai-and-datascience/post/developing-ai-apps-oci-generative-ai-langchain)
 - [Oracle and Generative AI](https://docs.oracle.com/en-us/iaas/Content/Resources/Assets/whitepapers/oracle-and-generative-ai.pdf)
 - [Oracle’s generative AI strategy - blog by Greg Pavlik](https://blogs.oracle.com/ai-and-datascience/post/generative-ai-strategy)
 - [Oracle to Deliver Powerful and Secure Generative AI Services for Business](https://www.oracle.com/news/announcement/oracle-to-deliver-powerful-and-secure-generative-ai-service-for-business-2023-06-13/)