doc: 增加2.7.1模型信息

Readme.md

@@ -87,6 +87,7 @@ pip install torch torchvision torchaudio --index-url https://download.pytorch.or
 | [ChatGLM2-6B](https://www.modelscope.cn/models/ZhipuAI/chatglm2-6b/summary) | 2.0-2.3                                    |                             |
 | [Qwen-7B-Chat-Int4](https://www.modelscope.cn/models/qwen/Qwen-7B-Chat-Int4/summary) | 2.3、2.6.2                                 | llmtuner                    |
 | [Qwen2-1.5B-Instruct-GPTQ-Int4](https://www.modelscope.cn/models/qwen/Qwen2-1.5B-Instruct-GPTQ-Int4/summary) | 2.5.3                                      | llmtuner                    |
+| [Qwen2.5-7B-Instruct-GPTQ-Int4](https://huggingface.co/Qwen/Qwen2.5-7B-Instruct-GPTQ-Int4) | 2.7.1 | llmtuner |
 | [RWKV(Seikaijyu微调)](https://huggingface.co/Seikaijyu)      | 参见 [HF](https://huggingface.co/Seikaijyu) | （需要下载配置 RWKV-Runner） |
 
 微调模型下载：[Releases](https://github.com/Moemu/Muice-Chatbot/releases)