Update glarea-example.flatpakref

Update the link to the GNOME nightly SDK.

Fixes: #8

glarea-example.flatpakref

@@ -6,4 +6,4 @@ Branch=master
 Url=https://ebassi.github.io/glarea-example/repo
 GPGKey=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
 IsRuntime=false
-RuntimeRepo=https://sdk.gnome.org/gnome.flatpakrepo
+RuntimeRepo=https://nightly.gnome.org/gnome-nightly.flatpakrepo