Update README.md

README.md

@@ -48,13 +48,13 @@ dataset = load_dataset('pasinit/xlwic', 'en_it')
 ```
 
 ## Languages
-XL-WiC provides training data in:
+### Training data
 - en (English)
 - fr (French)
 - de (German)
 - it (Italian)
 
-and dev and test data in:
+### Dev & Test data
 - fr (French)
 - de (German)
 - it (Italian)