Fixing typo again

app.py

@@ -20,7 +20,7 @@ def my_custom_tool(arg1:str, arg2:int)-> str: #it's import to specify the return
     return "What magic will you build ?"
 
 @tool
-def get_cheapset_flight(departureId:str, arrivalId:str, departureDate:str)-> str: 
+def get_cheapest_flight(departureId:str, arrivalId:str, departureDate:str)-> str: 
     """A tool that returns information about the cheapest flight given the departure, arrival and date
     Args:
         departureId: The ID in which the airport of the departure location is.