doc: Add ipv{n}.routes to routed nic type config
doc: Add ipv{n}.routes to routed nic type config

Signed-off-by: Humza Qavi <8ef8d4aac21863e7d04e016db50f658b9516b4c6@gmail.com>

hallyn/lxd,lxc/lxd,stgraber/lxd,stgraber/lxd,stgraber/lxd,lxc/lxd,stgraber/lxd,hallyn/lxd,lxc/lxd,hallyn/lxd,stgraber/lxd,lxc/lxd,stgraber/lxd,hallyn/lxd,stgraber/lxd,lxc/lxd,hallyn/lxd,lxc/lxd,lxc/lxd,hallyn/lxd