gnome3.bijiben: mark as not broken since it works a little

pkgs/desktops/gnome-3/apps/bijiben/default.nix

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   meta = with stdenv.lib; {
     homepage = https://wiki.gnome.org/Apps/Bijiben;
     description = "Note editor designed to remain simple to use";
-    broken = true;
     maintainers = gnome3.maintainers;
     license = licenses.gpl3;
     platforms = platforms.linux;