Update app.py

app.py

@@ -12,7 +12,7 @@ from datasets import load_dataset
 
 # load arena battles
 ds = load_dataset("lmarena-ai/arena-human-preference-100k")
-battles = ds['train'].to_pandas()
+df = ds['train'].to_pandas()
 
 # Expected columns in this dataset family:
 # ['question_id','model_a','model_b','winner','conversation_a','conversation_b',