update readme

README.md

@@ -59,9 +59,9 @@ Please notice that we encourage you to read our tutorials and learn more about
 ### Transcribing your own audio files (in English)
 
 ```python
-from speechbrain.pretrained import TransformerASR
+from speechbrain.pretrained import EncoderDecoderASR
 
-asr_model = TransformerASR.from_hparams(source="speechbrain/asr-transformer-aishell", savedir="pretrained_models/asr-transformer-aishell")
+asr_model = EncoderDecoderASR.from_hparams(source="speechbrain/asr-transformer-aishell", savedir="pretrained_models/asr-transformer-aishell")
 asr_model.transcribe_file("speechbrain/asr-transformer-aishell/example.wav")
 
 ```
@@ -77,4 +77,4 @@ asr_model.transcribe_file("speechbrain/asr-transformer-aishell/example.wav")
     journal = {GitHub repository},
     howpublished = {\\\\\\\\url{https://github.com/speechbrain/speechbrain}},
   }
-```
+```