add aishell conformer, test=doc

paddlespeech/cli/asr/pretrained_models.py

@@ -27,6 +27,16 @@ pretrained_models = {
         'ckpt_path':
         'exp/conformer/checkpoints/wenetspeech',
     },
+    "conformer_aishell-zh-16k": {
+        'url':
+        'https://paddlespeech.bj.bcebos.com/s2t/aishell/asr1/asr1_conformer_aishell_ckpt_0.1.2.model.tar.gz',
+        'md5':
+        'ca2c97242863ed4d8baa394be715d989',
+        'cfg_path':
+        'model.yaml',
+        'ckpt_path':
+        'exp/conformer/checkpoints/avg_30',
+    }
     "transformer_librispeech-en-16k": {
         'url':
         'https://paddlespeech.bj.bcebos.com/s2t/librispeech/asr1/asr1_transformer_librispeech_ckpt_0.1.1.model.tar.gz',