Ticket #269: Add missing period.

extensions/guacamole-auth-mysql/src/main/java/net/sourceforge/guacamole/net/auth/mysql/service/UserService.java

@@ -318,7 +318,7 @@ public class UserService {
     }
 
     /**
-     * Deletes the user having the given username from the database
+     * Deletes the user having the given username from the database.
      * @param username The username of the user to delete.
      */
     public void deleteUser(String username) {