typo for handling one translated string

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/branches/maintenance/gramps40@21860 4ae1f11a-8b86-4847-b8af-ab372f36d1fd
update Debian control file according to README file

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/branches/maintenance/gramps40@21861 4ae1f11a-8b86-4847-b8af-ab372f36d1fd