MFde: Update the German documentation set.

books/faq/book.sgml 1.1120 -> 1.1123
books/handbook/cutting-edge/chapter.sgml 1.247 -> 1.248
books/handbook/desktop/chapter.sgml 1.95 -> 1.96
books/handbook/firewalls/chapter.sgml 1.92 -> 1.93
books/handbook/install/chapter.sgml 1.392 -> 1.394
books/handbook/network-servers/chapter.sgml 1.122 -> 1.123
books/handbook/x11/chapter.sgml 1.201 -> 1.202

Obtained from: The FreeBSD German Documentation Project