Fix broken qwen3-next blog link

The old link was broken, since the blog post for qwen3-next was taken down on qwenlm.github.io so this changes the link to the qwen.ai link

README.md

@@ -29,7 +29,7 @@ We are seeing strong performance in terms of both parameter efficiency and infer
 
 ![Qwen3-Next-80B-A3B-Thinking Benchmark Comparison](https://qianwen-res.oss-accelerate.aliyuncs.com/Qwen3-Next/Qwen3-Next-80B-A3B-Thinking.001.jpeg)
 
-For more details, please refer to our blog post [Qwen3-Next](https://qwenlm.github.io/blog/qwen3_next/).
+For more details, please refer to our blog post [Qwen3-Next](https://qwen.ai/blog?id=e34c4305036ce60d55a0791b170337c2b70ae51d&from=home.latest-research-list).
 
 ## Model Overview