MFbed:  Update the German documentation set.

doc/de_DE.ISO8859-1/articles/explaining-bsd/article.sgml fixes only
doc/de_DE.ISO8859-1/books/faq/book.sgml 1.804 -> 1.805
doc/de_DE.ISO8859-1/books/fdp-primer/sgml-markup/chapter.sgml fixes only
doc/de_DE.ISO8859-1/books/handbook/Makefile 1.106 -> 1.107
doc/de_DE.ISO8859-1/books/handbook/advanced-networking/chapter.sgml 1.396 -> 1.397
doc/de_DE.ISO8859-1/books/handbook/install/chapter.sgml 1.361 -> 1.363
doc/de_DE.ISO8859-1/books/handbook/multimedia/chapter.sgml 1.126 -> 1.127
doc/de_DE.ISO8859-1/books/handbook/network-servers/chapter.sgml 1.98 -> 1.99

Obtained from:  The FreeBSD German Documentation Project.