[led] Fix comment to point at correct infra package.
[led] Fix comment to point at correct infra package.

We'll be landing it directly on top of the existing led package, not
a new one.

TBR=yiwzhang@google.com

Bug: 1017818
Change-Id: I8a79c96cd8b8165df7e495d8446a73b433cbb4d4
Reviewed-on: https://chromium-review.googlesource.com/c/infra/luci/luci-go/+/2149596
Reviewed-by: Robbie Iannucci <40f3d43a28ebae3cb819288542e1c84d73d962d5@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