README.md: being explicit about action

README.md

@@ -11,7 +11,7 @@ Distributed and FP16 support relies on work by Christian Sarofeen and NVIDIA's
 
 ![Alignment, Predicted Mel Spectrogram, Target Mel Spectrogram](tensorboard.png)
 
-[Demo audio](https://github.com/NVIDIA/tacotron2/blob/master/demo.wav) trained on LJS and using Ryuchi Yamamoto's [pre-trained Mixture of Logistics
+[Download demo audio](https://github.com/NVIDIA/tacotron2/blob/master/demo.wav) trained on LJS and using Ryuchi Yamamoto's [pre-trained Mixture of Logistics
 wavenet](https://github.com/r9y9/wavenet_vocoder/)  
 "Scientists at the CERN laboratory say they have discovered a new particle."