Sort the requirements

requirements.txt

@@ -2,11 +2,11 @@ accelerate==0.17.1
 bitsandbytes==0.37.1
 flexgen==0.1.7
 gradio==3.18.0
+markdown
 numpy
 requests
 rwkv==0.4.2
 safetensors==0.3.0
 sentencepiece
 tqdm
-markdown
-git+https://github.com/zphang/transformers.git@68d640f7c368bcaaaecfc678f11908ebbd3d6176
+git+https://github.com/zphang/transformers.git@68d640f7c368bcaaaecfc678f11908ebbd3d6176