ICU-22874 sync config.guess license

Author: markusicu

LICENSE

@@ -501,7 +501,7 @@ File: config.guess (only for ICU4C)
 
 This file is free software; you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 3 of the License, or
+the Free Software Foundation, either version 3 of the License, or
 (at your option) any later version.
 
 This program is distributed in the hope that it will be useful, but