Update Flatpak instructions

The two-line bash block was rendering as a single line,
which obviously doesn't doesn't work if you paste it
into the terminal.

_posts/2000-01-05-install.md

@@ -144,9 +144,8 @@ Examples:
   ```
 
 ### <a tabindex="-1" aria-hidden="true" id="flatpak" href="#flatpak"></a>Flatpak Option (Linux)
-VSCodium is (unofficially) available as a [Flatpak app](https://flathub.org/apps/details/com.vscodium.codium) and here's the [build repo](https://github.com/flathub/com.vscodium.codium). If your distribution has support for [flatpak](https://flathub.org), and you have enabled the [flathub repo](https://flatpak.org/setup/):
+VSCodium is (unofficially) available as a [Flatpak app](https://flathub.org/apps/details/com.vscodium.codium) and here's the [build repo](https://github.com/flathub/com.vscodium.codium). If your distribution has support for [flatpak](https://flathub.org), and you have enabled the [flathub repo](https://flatpak.org/setup/), you can install VSCodium via the command line:
 ```bash
 flatpak install flathub com.vscodium.codium
-
-flatpak run com.vscodium.codium
 ```
+…or by opening the [flatpakref](https://dl.flathub.org/repo/appstream/com.vscodium.codium.flatpakref) file from [Flathub](https://flathub.org/apps/details/com.vscodium.codium). VSCodium can also be found in GNOME Software if you have `gnome-software-plugin-flatpak` installed (as recommended in the Flathub setup instructions).