Fixed typo in German translation

2 jobs for main in 4 minutes and 30 seconds
Name Stage Failure
build-ubuntu Build

|Executing subproject libadwaita method meson

subprojects/libadwaita/ ERROR: Meson version is 0.56.2 but project requires >= 0.59.0

A full log can be found at /builds/nicokimmel/xdg-desktop-portal-gnome/_build/meson-logs/meson-log.txt
Cleaning up project directory and file based variables
ERROR: Job failed: exit code 1