Add legal tag

To help make your model more discoverable to domain experts, I suggest adding a legal `tag` to the metadata for your model.

README.md

@@ -3,6 +3,8 @@ language: it
 license: afl-3.0
 widget:
 - text: Il [MASK] ha chiesto revocarsi l'obbligo di pagamento
+tags:
+- legal
 ---
 
 <img  src="https://huggingface.co/dlicari/Italian-Legal-BERT/resolve/main/ITALIAN_LEGAL_BERT.jpg" width="600"/>