repo: Add a newline after metadata
repo: Add a newline after metadata

Without this, we can end up with the shell prompt
getting tucked behind the last line of the metadata,
which is confusing.

Closes: #2156
Approved by: alexlarsson

matthiasclasen/flatpak,matthiasclasen/flatpak,matthiasclasen/flatpak,matthiasclasen/flatpak,flatpak/flatpak,matthiasclasen/flatpak,flatpak/flatpak,flatpak/flatpak,flatpak/flatpak,flatpak/flatpak