wireguard: readme fix
wireguard: readme fix

Type: fix

Signed-off-by: Artem Glazychev <441b52f84e057ab1215b5caeaea1cdeb3a6be2f5@xored.com>
Change-Id: I0080a158fc3e17dfdd360f6ba164e3bfa3d585a6

chrisy/vpp,FDio/vpp,chrisy/vpp,chrisy/vpp,FDio/vpp,FDio/vpp,FDio/vpp,FDio/vpp,chrisy/vpp,chrisy/vpp,FDio/vpp,chrisy/vpp,FDio/vpp,chrisy/vpp,FDio/vpp,chrisy/vpp