Add a note about rebooting in WireGuard installation (#3607)
Add a note about rebooting in WireGuard installation (#3607)

WireGuard depends on a kernel module that may not be available
until node reboot. Adds a note to the installation instructions
regarding this.
bcreane/calico,bcreane/calico,bcreane/calico,bcreane/calico,bcreane/calico,bcreane/calico