Update app.py

app.py

@@ -16,7 +16,7 @@ def get_codename(arg1:str, arg2:int)-> str: #it's import to specify the return t
         arg1: name that is the first argument
         arg2: number that is the second argument
     """
-    return arg1 + str(arg2) + "007"
+    return arg1 + str(arg2) + ":007"
 
 @tool
 def get_current_time_in_timezone(timezone: str) -> str: