fix missing hf_eval_split option

Author: hsuan-lun-chiang

end_to_end/tpu/test_convergence_1b_params.sh

@@ -52,6 +52,7 @@ then
     gsutil cp -r gs://maxtext-dataset/hf/llama2-tokenizer "${MAXTEXT_ASSETS_ROOT:-${MAXTEXT_PKG_DIR:-${MAXTEXT_REPO_ROOT:-$PWD}/src/MaxText/assets}}"
     CMD_DATA=" hf_path=parquet tokenizer_path=${MAXTEXT_ASSETS_ROOT:-${MAXTEXT_PKG_DIR:-${MAXTEXT_REPO_ROOT:-$PWD}/src/MaxText/assets}}/llama2-tokenizer \
         hf_train_files=$DATASET_PATH/hf/c4/c4-train-*.parquet \
+        hf_eval_split=train \
         hf_eval_files=$DATASET_PATH/hf/c4/c4-validation-*.parquet "
 fi