Network configuration documentation issues

[Duncaen]

Network configuration in Void Linux can be done in several ways. The default installation comes with the dhcpcd(8) service enabled.

https://github.com/void-linux/void-docs/blob/c068cd821bc61658cb49426f9d8ba2c49d745cf4/src/config/network/index.md#L3-L5

"The default installation" is weird and confusing, there is no a real default installation and if there is (xbps-install -r /mnt base-system) then dhcpcd is not enabled, this should probably be fully removed or reworded to say that dhcpcd may be installed depending on the ISO and the installation method.