Update getting-started-exercises.md

getting-started-exercises.md

@@ -306,7 +306,7 @@ Write a function called make_great() that modifies the array of magicians by add
 the phrase the Great to each magician’s name. Call show_magicians() to
 see that the list has actually been modified.
 
-43. Unchanged Magicians: Start with your work from Exercise 40. Call the
+43. Unchanged Magicians: Start with your work from Exercise 41. Call the
 function make_great() with a copy of the array of magicians’ names. Because the
 original array will be unchanged, return the new array and store it in a separate array.
 Call show_magicians() with each array to show that you have one array of the original