Update README.md

fix readme example

README.md

@@ -21,9 +21,10 @@ An ideal music synthesizer should be both interactive and expressive, generating
 ```python
 from diffusers import SpectrogramDiffusionPipeline
 
-pipe = SpectrogramDiffusionPipeline.from_pretrained("kashif/music-spectrogram-diffusion")
+pipe = SpectrogramDiffusionPipeline.from_pretrained("google/music-spectrogram-diffusion")
 pipe = pipe.to("cuda")
 
+# Download via: wget http://www.piano-midi.de/midis/beethoven/beethoven_hammerklavier_2.mid
 output = pipe("beethoven_hammerklavier_2.mid")
 
 audio = output.audios[0]