extend help text (refs #2291)

git-svn-id: file:///var/svn/freetz/trunk@11615 149334a1-2f27-0410-a3b9-fc62619ac1e6
help text: fix tabulator width, terminals are not using the Freetz-tab width of 4 spaces... (refs #2291)

git-svn-id: file:///var/svn/freetz/trunk@11616 149334a1-2f27-0410-a3b9-fc62619ac1e6