Fix comment error around UTF-8 and PDO

_posts/05-05-01-PHP-and-UTF8.md

@@ -86,7 +86,7 @@ $string = mb_substr($string, 0, 15);
  
 // Connect to a database to store the transformed string
 // See the PDO example in this document for more information
-// Note the `set names utf8mb4` commmand!
+// Note the `charset=utf8mb4` in the Data Source Name (DSN)
 $link = new PDO(
     'mysql:host=your-hostname;dbname=your-db;charset=utf8mb4',
     'your-username',