modified README of transformer_tts and fastspeech

examples/fastspeech/README.md

@@ -129,7 +129,7 @@ python synthesis.py \
 --vocoder='griffin-lim' \
 ```
 
-We currently support two vocoders, ``Griffin-Lim`` algorithm and ``WaveFlow``. You can set ``--vocoder`` to use one of them. If you want to use ``waveflow`` as your vocoder, you need to set ``--config_vocoder`` and ``--checkpoint_vocoder`` which are the path of the config and checkpoint of vocoder. You can download the pre-trained model of ``waveflow`` from [here](https://github.com/PaddlePaddle/Parakeet#vocoders).
+We currently support two vocoders, Griffin-Lim algorithm and WaveFlow. You can set ``--vocoder`` to use one of them. If you want to use WaveFlow as your vocoder, you need to set ``--config_vocoder`` and ``--checkpoint_vocoder`` which are the path of the config and checkpoint of vocoder. You can download the pre-trained model of WaveFlow from [here](https://github.com/PaddlePaddle/Parakeet#vocoders).
 
 Or you can run the script file directly.
 

examples/transformer_tts/README.md

@@ -98,7 +98,7 @@ python synthesis.py \
 --vocoder='griffin-lim' \
 ```
 
-We currently support two vocoders,  ``Griffin-Lim`` algorithm and ``WaveFlow``. You can set ``--vocoder`` to use one of them. If you want to use ``waveflow`` as your vocoder, you need to set ``--config_vocoder`` and ``--checkpoint_vocoder`` which are the path of the config and checkpoint of vocoder. You can download the pre-trained model of ``waveflow`` from [here](https://github.com/PaddlePaddle/Parakeet#vocoders).
+We currently support two vocoders,  Griffin-Lim algorithm and WaveFlow. You can set ``--vocoder`` to use one of them. If you want to use WaveFlow as your vocoder, you need to set ``--config_vocoder`` and ``--checkpoint_vocoder`` which are the path of the config and checkpoint of vocoder. You can download the pre-trained model of WaveFlow from [here](https://github.com/PaddlePaddle/Parakeet#vocoders).
 
 Or you can run the script file directly.