[bug-gettext] E-mail address in the README file

[Göran Uddeborg]

The gettext README file says

    Send comments and bug reports to
                    bug-gnu-gett...@gnu.org

and I just sent a report to that list.  But when I took a look at
https://lists.gnu.org/mailman/listinfo/ I realise there is no list of
that name.  Instead, there is a bug-gettext list.  Hopefully both
addresses work, so it might not be a big deal.  But for consistency,
maybe the README file should be updated to use the proper list name.