Remove duplicate llama.cpp flag

README_zh.md

@@ -292,7 +292,7 @@ CUDA_VISIBLE_DEVICES=0 python demo/text_generation.py --model OrionStarAI/Orion-
 - 如何运行GGUF格式模型推理
 
   ```shell
-  ./main --frequency-penalty 0.5 --frequency-penalty 0.5 --top-k 5 --top-p 0.9 -m chat.gguf -p "Building a website can be done in 10 simple steps:\nStep 1:" -n 400 -e
+  ./main --frequency-penalty 0.5 --top-k 5 --top-p 0.9 -m chat.gguf -p "Building a website can be done in 10 simple steps:\nStep 1:" -n 400 -e
   ```