docs: enum cleanup
docs: enum cleanup

Move GtkDragResult to the DND section

ahodesuka/gtk,Sidnioulz/SandboxGtk,chergert/gtk,ahodesuka/gtk,jigpu/gtk,Adamovskiy/gtk,Lyude/gtk-,davidgumberg/gtk,chergert/gtk,chergert/gtk,jadahl/gtk,davidgumberg/gtk,grubersjoe/adwaita,davidgumberg/gtk,jessevdk/gtk,Lyude/gtk-,Adamovskiy/gtk,Lyude/gtk-,jadahl/gtk,Lyude/gtk-,ahodesuka/gtk,grubersjoe/adwaita,davidgumberg/gtk,jigpu/gtk,ahodesuka/gtk,davidgumberg/gtk,alexlarsson/gtk,chergert/gtk,jigpu/gtk,Adamovskiy/gtk,Sidnioulz/SandboxGtk,alexlarsson/gtk,Lyude/gtk-,jadahl/gtk,grubersjoe/adwaita,jigpu/gtk,jadahl/gtk,chergert/gtk,Sidnioulz/SandboxGtk,grubersjoe/adwaita,chergert/gtk,Adamovskiy/gtk,grubersjoe/adwaita,jigpu/gtk,jadahl/gtk,jigpu/gtk,ahodesuka/gtk,alexlarsson/gtk,davidgumberg/gtk,chergert/gtk,davidgumberg/gtk,Sidnioulz/SandboxGtk,jessevdk/gtk,jadahl/gtk,jadahl/gtk,davidgumberg/gtk,Adamovskiy/gtk,ahodesuka/gtk,jadahl/gtk,ahodesuka/gtk,Sidnioulz/SandboxGtk,alexlarsson/gtk,alexlarsson/gtk,alexlarsson/gtk,Adamovskiy/gtk,Adamovskiy/gtk,chergert/gtk,Lyude/gtk-,jessevdk/gtk,jigpu/gtk,ahodesuka/gtk,grubersjoe/adwaita,alexlarsson/gtk,Sidnioulz/SandboxGtk,grubersjoe/adwaita,alexlarsson/gtk,jessevdk/gtk,Lyude/gtk-,grubersjoe/adwaita,jessevdk/gtk,jessevdk/gtk,jessevdk/gtk,Lyude/gtk-,Adamovskiy/gtk,jigpu/gtk