Update README.md

It appears that you have missed the widget attribute.

README.md

@@ -2,11 +2,19 @@
 license: apache-2.0
 base_model: jonatasgrosman/wav2vec2-large-xlsr-53-english
 tags:
-- generated_from_trainer
-- audio
-- automatic-speech-recognition
-- speech
-- speech-emotion-recognition
+  - generated_from_trainer
+  - audio
+  - automatic-speech-recognition
+  - speech
+  - speech-emotion-recognition
+  - audio-classification
+widget:
+  - example_title: IEMOCAP clip "happy"
+    src: >-
+      https://cdn-media.huggingface.co/speech_samples/IEMOCAP_Ses01F_impro03_F013.wav
+  - example_title: IEMOCAP clip "neutral"
+    src: >-
+      https://cdn-media.huggingface.co/speech_samples/IEMOCAP_Ses01F_impro04_F000.wav
 metrics:
 - accuracy
 model-index: