typo

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/surveillance@756 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
no tests, redundant copy of hhh4-vignette code which is evaluated anyway


git-svn-id: svn://svn.r-forge.r-project.org/svnroot/surveillance@757 edb9625f-4e0d-4859-8d74-9fd3b1da38cb