Update app.py

app.py

@@ -118,7 +118,7 @@ def predict(
         yield chatbot, history, past_key_values
 
 
-def trans_api(input, max_length=40960, top_p=0.8, temperature=0.2:
+def trans_api(input, max_length=40960, top_p=0.8, temperature=0.2):
     if max_length < 10:
         max_length = 40960
     if top_p < 0.1 or top_p > 1: