updated example check doc
### Using Go
-Creating your own `khcheck` is very easy. If you are using Go, we have an easy to use client package at [github.com/Comcast/kuberhealthy/pkg/checks/external/checkClient](https://godoc.org/github.com/Comcast/kuberhealthy/pkg/checks/external/checkClient).
+Creating your own `khcheck` is very easy. If you are using Go, we have an easy to use client package at [github.com/Comcast/kuberhealthy/v2/pkg/checks/external/checkClient](https://godoc.org/github.com/Comcast/kuberhealthy/v2/pkg/checks/external/checkClient).
<img src="../images/example check.png">
