docs: 2019
docs: 2019

i3-gnome still works flawlessly with the last version of GNOME.

So this label is updated.

PRs are welcome :^)

Signed-off-by: Jesús Castro <803f1e96c2d9cd0e78d1a18a358616f7d2f37a71@gmail.com>

lvillani/i3-gnome