fix egs

examples/aishell/local/run_data.sh

 #! /usr/bin/env bash
 
+mkdir -p data
+
 # download data, generate manifests
 PYTHONPATH=.:$PYTHONPATH python3 local/aishell.py \
 --manifest_prefix="data/manifest" \

examples/aishell/run.sh

@@ -19,6 +19,3 @@ bash ./local/run_test.sh
 
 # infer model
 bash ./local/run_infer.sh
-
-# tune model
-bash ./local/run_tune.sh

examples/librispeech/local/run_data.sh

 #! /usr/bin/env bash
 
+mkdir -p data
+
 # download data, generate manifests
 PYTHONPATH=.:$PYTHONPATH python3 local/librispeech.py \
 --manifest_prefix="data/manifest" \
---target_dir="{MAIN_ROOT}/dataset/librispeech" \
+--target_dir="${MAIN_ROOT}/dataset/librispeech" \
 --full_download="True"
 
 if [ $? -ne 0 ]; then