fix: use pyannote.audio instead of PyAnnote Audio

Source: https://github.com/pyannote/pyannote-audio/blob/develop/FAQ.md#how-does-one-capitalize-and-pronounce-the-name-of-this-awesome-library

Author: hbredin

README.md

@@ -115,7 +115,7 @@ If you want to try out the ASR + Diarization pipeline, you can try out the follo
 ### Example
 
 In order to use the ASR + Diarization pipeline, you need to install 🤗 [Transformers](https://github.com/huggingface/transformers) 
-and [PyAnnote Audio](https://github.com/pyannote/pyannote-audio):
+and [pyannote.audio](https://github.com/pyannote/pyannote-audio):
 
 ```
 pip install --upgrade transformers pyannote.audio