[cipd] Update helpstring for `ensure` to not suggest `init` and `install`
[cipd] Update helpstring for `ensure` to not suggest `init` and `install`

R=bpastene@chromium.org, 9f116ddb1b24f6fc1916a676eb17161b6c07dfc1@chromium.org

Change-Id: I54600b6b19541a9010ce6e94ab3004e5b920fb41
Reviewed-on: https://chromium-review.googlesource.com/c/infra/luci/luci-go/+/2288414
Reviewed-by: Vadim Shtayura <9f116ddb1b24f6fc1916a676eb17161b6c07dfc1@chromium.org>
Commit-Queue: Robbie Iannucci <40f3d43a28ebae3cb819288542e1c84d73d962d5@chromium.org>

luci/luci-go,luci/luci-go,luci/luci-go,luci/luci-go,luci/luci-go,luci/luci-go