Update app.py

app.py

@@ -36,7 +36,7 @@ combined_models = []
 combined_models.extend(whisper_models)
 combined_models.extend(custom_models)
 
-usage = requests.get('https://api-free.deepl.com/v2/usage', headers=headers)
+usage = requests.get('https://api.deepl.com/v2/usage', headers=headers)
 usage = json.loads(usage.text)
 deepL_character_usage = str(usage['character_count'])
 print("deepL_character_usage")