Update app.py

app.py

@@ -262,7 +262,7 @@ async def api_cards(request: Request) -> Response:
         await set_state(state)
 
        if EMAIL_ENABLED:
-            subject = f"New model card posted: {card.get('model','')}"
+           subject = f"New model card posted: {card.get('model','')}"
             body = (
                 f"Model: {card.get('model','')}\n"
                 f"Tags: {', '.join(card.get('tags', []) or [])}\n"