add demo link

README.md

@@ -22,7 +22,7 @@ license: apache-2.0
 
 [![evaluation](https://github.com/InternLM/InternLM/assets/22529082/f80a2a58-5ddf-471a-8da4-32ab65c8fd3b)](https://github.com/internLM/OpenCompass/)
 
-[💻Github Repo](https://github.com/InternLM/InternLM) • [🤔Reporting Issues](https://github.com/InternLM/InternLM/issues/new) • [📜Technical Report](https://arxiv.org/abs/2403.17297)
+[💻Github Repo](https://github.com/InternLM/InternLM) • [🤗Demo](https://huggingface.co/spaces/internlm/internlm3-8b-instruct) • [🤔Reporting Issues](https://github.com/InternLM/InternLM/issues/new) • [📜Technical Report](https://arxiv.org/abs/2403.17297)
 
 </div>