Change nvidia-dkms to nvidia-open-dkms

The package nvidia-open-dkms is the suggested option by both archlinux and nvidia.
It works generally better.
It supports nvidia 2000 and up: unlinke nvidia-dkms, but 1000 series cards have problems with directx12 games anyway.

manifest

@@ -133,7 +133,7 @@ export PACKAGES="\
 	noto-fonts-emoji \
 	nss-mdns \
 	ntfs-3g \
-	nvidia-dkms \
+	nvidia-open-dkms \
 	opencl-nvidia \
 	lib32-opencl-nvidia \
 	nvidia-utils \