Update app.py

app.py

@@ -18,7 +18,7 @@ def get_dcf_of_company(symbol: str) -> str:
     """Retrieve the Discounted Cash Flow (DCF) of a company based on its stock symbol.
     
     Args:
-        symbol (str): The stock symbol of the company (e.g., 'AAPL' for Apple, 'IBM' for IBM).
+        symbol: The stock symbol of the company (e.g., 'AAPL' for Apple, 'IBM' for IBM).
     
     Returns:
         str: A message with the DCF value or an error message if the calculation fails.