Fix link to kubeadm install page
Fix link to kubeadm install page

Signed-off-by: Troll Berserker <b480399c29aaf144e5b4e9edca7d4963c2777593@yandex.com>

rook/rook,rook/rook,rook/rook,rook/rook,rook/nfs,rook/rook,rook/nfs,rook/nfs