fix kubetest command in conformance docs
@@ -19,6 +19,7 @@ This directory contains tooling for displaying [kubernetes conformance test](htt
- make sure `kubectl` / `$KUBECONFIG` is authed to your cluster
- run kubetest with:
```sh
+ export KUBERNETES_CONFORMANCE_TEST=y
kubetest --provider=skeleton \
--test --test_args="--ginkgo.focus=\[Conformance\]" \
--dump=./_artifacts | tee ./e2e.log
