fix the voc3 about --am and --voc (#4050)

examples/csmsc/voc3/local/synthesize_e2e.sh

@@ -8,13 +8,13 @@ FLAGS_allocator_strategy=naive_best_fit \
 FLAGS_fraction_of_gpu_memory_to_use=0.01 \
 python3 ${BIN_DIR}/../../synthesize_e2e.py \
     --am=fastspeech2_csmsc \
-    --am_config=${config_path} \
-    --am_ckpt=${train_output_path}/checkpoints/${ckpt_name} \
-    --am_stat=dump/train/speech_stats.npy \
+    --am_config=fastspeech2_nosil_baker_ckpt_0.4/default.yaml \
+    --am_ckpt=fastspeech2_nosil_baker_ckpt_0.4/snapshot_iter_76000.pdz \
+    --am_stat=fastspeech2_nosil_baker_ckpt_0.4/speech_stats.npy \
     --voc=mb_melgan_csmsc \
-    --voc_config=mb_melgan_csmsc_ckpt_0.1.1/default.yaml \
-    --voc_ckpt=mb_melgan_csmsc_ckpt_0.1.1/snapshot_iter_1000000.pdz\
-    --voc_stat=mb_melgan_csmsc_ckpt_0.1.1/feats_stats.npy \
+    --voc_config=${config_path} \
+    --voc_ckpt=${train_output_path}/checkpoints/${ckpt_name} \
+    --voc_stat=dump/train/feats_stats.npy \
     --lang=zh \
     --text=${BIN_DIR}/../../assets/sentences.txt \
     --output_dir=${train_output_path}/test_e2e \