Update README.md (#1636)

README.md

@@ -20,7 +20,7 @@
         <img alt="Docker Pulls" src="https://img.shields.io/docker/pulls/langgenius/dify-web"></a>
 </p>
 
-[v.03.31:Surpassing the Assistants API – Dify's RAG Demonstrates an Impressive 20% Improvement.](https://dify.ai/blog/dify-ai-rag-technology-upgrade-performance-improvement-qa-accuracy)
+[v0.3.31:Surpassing the Assistants API – Dify's RAG Demonstrates an Impressive 20% Improvement.](https://dify.ai/blog/dify-ai-rag-technology-upgrade-performance-improvement-qa-accuracy)
 
 **Dify** is an LLM application development platform that has already seen over **100,000** applications built on Dify.AI. It integrates the concepts of Backend as a Service and LLMOps, covering the core tech stack required for building generative AI-native applications, including a built-in RAG engine. With Dify, **you can self-deploy capabilities similar to Assistants API and GPTs based on any LLMs.**