Update README.md

README.md

@@ -203,7 +203,7 @@ https://github.com/EleutherAI/lm-evaluation-harness#install
 
 ```Shell
 export MODEL=google/gemma-3-12b-it # or pytorch/gemma-3-12b-it-FP8
-lm_eval --model hf --model_args pretrained=google/gemma-3-12b-it --tasks mmlu --device cuda:0 --batch_size 8
+lm_eval --model hf --model_args pretrained=$MODEL --tasks mmlu --device cuda:0 --batch_size 8
 ```
 
 ## multi-modal eval