Author Directory - apostrophe bug

The lists that "Author Directory" generates have a bug when it comes to generating links for names that contain an apostrophe. For example, if you click the "Bi" link, scroll down to "Dante's Bistro", and click that link, it gives a non-existent author page. The problem is that the link the "Author Directory" generates has a 'curly-apostrophe' instead of a regular apostrophe. I'm guessing that this should be reasonably easy to correct. For last names starting with A-C, this problem affects 25 names