Fix speaker ID error - Azure Cobalt

Azure.py

@@ -9,7 +9,7 @@ _base_ = [
 ]
 
 speaker_mapping = {
-    "Placeholder": 0,
+    "azure": 0,
 }
 
 model = dict(

config.yaml

@@ -90,5 +90,5 @@ models:
     checkpoint: checkpoints/Azure.ckpt
     readme: |
       This model is trained on a dataset known as Azure Cobalt and released under the [CC-BY-NC-SA 4.0](https://creativecommons.org/licenses/by-nc-sa/4.0/) license.
-      It has a whispery, fluttery voice.
+      It has a stable, mature voice.
     default_speaker: "azure"