A mistake in the explanation

freeCodeCamp Support
1

In this challenge
https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/functional-programming/sort-an-array-alphabetically-using-the-sort-method

There is a piece of code:

function reverseAlpha(arr) {
      return arr.sort(function(a, b) {
    return a < b;
  });
}
reverseAlpha(['l', 'h', 'z', 'b', 's']);
// Returns ['z', 's', 'l', 'h', 'b']

This looks like a mistake.
This code does not return [‘z’, ‘s’, ‘l’, ‘h’, ‘b’].