cmd/cue: mention -c=false in vet's incomplete error
This updates the general error message emitted when cue-vet fails
because "some instances are incomplete" by adding a mention of the
-c=false flag that could allow the vet to succeed.
Signed-off-by: Jonathan Matthews <github@hello.jonathanmatthews.com>
Change-Id: I21ceec2f6c3c69b17a46633cbb3ee371c946238f
Reviewed-on: https://review.gerrithub.io/c/cue-lang/cue/+/1208694
TryBot-Result: CUEcueckoo <cueckoo@cuelang.org>
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
authored by