correct dataset language in reported metrics

README.md

@@ -17,9 +17,9 @@ model-index:
       name: Speech Recognition
       type: automatic-speech-recognition
     dataset:
-      name: Common Voice 8.0 fr
+      name: Common Voice 8.0 pt
       type: mozilla-foundation/common_voice_8_0
-      args: fr
+      args: pt
     metrics:
     - name: Test WER
       type: wer