Update dynamic_programming/fibonacci.py

Co-authored-by: Bertrand Awenze <156874668+bertrand-awz@users.noreply.github.com>

Author: Achintya47

dynamic_programming/fibonacci.py

@@ -218,7 +218,7 @@ def main() -> None:
                 else:
                     print(f"First {index} Fibonacci numbers: {result}")
                     if index > 0:
-                        print(f"The {index}th Fibonacci number is: {result[-1]}")
+                        print(f"The {index}th Fibonacci number is: {fibonacci.get_nth(index)}")
 
             except ValueError:
                 print("Invalid input. Enter a number or use 'help' for commands.")