Update README.md

README.md

@@ -104,7 +104,10 @@ The following table describes the available features:
 ```
 
 **APA:**
+
+```
 Jenthe Thienpondt, Kris Demuynck (2023). ECAPA2: A Hybrid Neural Network Architecture and Training Strategy for Robust Speaker Embeddings. In 2023 IEEE Automatic Speech Recognition and Understanding Workshop (ASRU)
+```
 
 ## Contact