Fix typos: iff -> if
Fix typos: iff -> if

Signed-off-by: mooncake <eac750bb6dc5cfebc726238f6f4175cf42f84e5d@tenxcloud.com>

justinsb/kops,kubernetes/kops,justinsb/kops,robinpercy/kops,blakebarnett/kops,aledbf/kops,aledbf/kops,robinpercy/kops,kubernetes/kops,justinsb/kops,gambol99/kops,aledbf/kops,robinpercy/kops,gambol99/kops,aledbf/kops,gambol99/kops,robinpercy/kops,blakebarnett/kops,kubernetes/kops,blakebarnett/kops,blakebarnett/kops,gambol99/kops