nit

lm_eval/tasks/mmlu/default/_default_template_yaml

-dataset_path: hails/mmlu_no_train # a copy of `cais/mmlu` with no auxiliary_train split
+dataset_path: hails/mmlu_no_train
 test_split: test
 fewshot_split: dev
 fewshot_config:
   sampler: first_n
 output_type: multiple_choice
 doc_to_text: "Question: {{question.strip()}}\nAnswer:"
-doc_to_choice: {{choices}}
+doc_to_choice: "{{choices}}"
 doc_to_target: answer
 metric_list:
   - metric: acc