(Automated) Update Flatpak Builder docs - #631

Cache paths are empty. Please check the previous logs and make sure that the python version is specified

https://specifications.freedesktop.org/desktop-entry-spec/latest/file-naming.html to https://specifications.freedesktop.org/desktop-entry/latest/file-naming.html

https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html to https://specifications.freedesktop.org/basedir/basedir-spec-latest.html

https://www.electron.build/flatpak.html to https://www.electron.build/flatpak/

https://specifications.freedesktop.org/desktop-entry-spec/latest/ to https://specifications.freedesktop.org/desktop-entry/latest/

https://github.com/flathub/electron-sample-app to https://github.com/flathub/org.flathub.electron-sample-app

https://github.com/flathub/electron-sample-app/blob/master/org.flathub.electron-sample-app.yml to https://github.com/flathub/org.flathub.electron-sample-app/blob/master/org.flathub.electron-sample-app.yml

https://flathub.org/apps/org.flatpak.Builder to https://flathub.org/en/apps/org.flatpak.Builder

https://flathub.org/apps/io.qt.qtdesignstudio to https://flathub.org/en/apps/io.qt.qtdesignstudio

https://flathub.org/apps/io.qt.QtCreator to https://flathub.org/en/apps/io.qt.QtCreator

https://discourse.gnome.org/tag/announcement to https://discourse.gnome.org/tag/announcement/44