Update instancegroups.go
Update instancegroups.go

Line 340: “Delete and CloudInstanceGroups”
It should be “Delete a CloudInstanceGroups”, is it?
aledbf/kops,blakebarnett/kops,robinpercy/kops,gambol99/kops,chrislovecnm/kops,tsupertramp/kops,aledbf/kops,justinsb/kops,mad01/kops,chrislovecnm/kops,mad01/kops,robinpercy/kops,blakebarnett/kops,gambol99/kops,tsupertramp/kops,justinsb/kops,tsupertramp/kops,aledbf/kops,gambol99/kops,justinsb/kops,blakebarnett/kops,mad01/kops,gambol99/kops,kubernetes/kops,kubernetes/kops,robinpercy/kops,mad01/kops,blakebarnett/kops,aledbf/kops,chrislovecnm/kops,chrislovecnm/kops,robinpercy/kops,kubernetes/kops,tsupertramp/kops