Update app.py

app.py

@@ -278,7 +278,7 @@ def generate_leaderboard(collection):
         
         category_data = []
         for category, data in row['categories'].items():
-            category_data.append(f"{category}: {data['elo_rating']}")
+            category_data.append(f"{data['elo_rating']}")
         
         total_elo = sum(category['elo_rating'] for category in row['categories'].values())
         total_games = sum(category['games_played'] for category in row['categories'].values())