book: update de

Updated via the `update-book.yml` GitHub workflow.

Author: ttaylorr

external/book/content/book/de/v2/_index.html

@@ -8,7 +8,7 @@
   language_code: de
   front_page: true
   repository_url: https://github.com/progit/progit2-de
-  sha: 5b1cb09126b0f0a65e7d76acb702a63fee92672e
+  sha: c4f0a32f55f41264c4c72aef9800b3bce306486e
 page_title: Git - Book
 url: "/book/de/v2.html"
 aliases:

external/book/sync/book-de.sha

@@ -1 +1 @@
-5b1cb09126b0f0a65e7d76acb702a63fee92672e
+c4f0a32f55f41264c4c72aef9800b3bce306486e