MFbed: Update the German documentation set.
doc/de_DE.ISO8859-1/articles/laptop/article.sgml 1.24 -> 1.25
doc/de_DE.ISO8859-1/books/handbook/disks/chapter.sgml 1.269 -> 1.270
doc/de_DE.ISO8859-1/books/handbook/install/chapter.sgml 1.344 -> 1.345
doc/de_DE.ISO8859-1/books/handbook/mirrors/chapter.sgml 1.422 -> 1.423
doc/de_DE.ISO8859-1/books/handbook/vinum/chapter.sgml 1.41 -> 1.42
doc/de_DE.ISO8859-1/flyer/flyer.tex 1.13 -> 1.14
Obtained from: The FreeBSD German Documentation Project.