Update README.md
Add KIAM link to readme.
## KIAM Check
-The (`KIAM`)[https://github.com/uswitch/kiam] check tests that `KIAM` servers and agents running within your cluster can properly intercept AWS metadata service requests. This check queries Lambdas utilizing a `KIAM` annotation, which can be set via your `KuberhealthyCheck` custom resource by passing in a field under `spec`:
+This check is intended for [`KIAM`](https://github.com/uswitch/kiam) users __only__.
+
+The [`KIAM`](https://github.com/uswitch/kiam) check tests that `KIAM` servers and agents running within your cluster can properly intercept AWS metadata service requests. This check queries Lambdas utilizing a `KIAM` annotation, which can be set via your `KuberhealthyCheck` custom resource by passing in a field under `spec`:
```yaml
spec:
