Leading slash in terraformrc provider in README

[nikcorg]

In the readme, it says to add this block to a ~/.terraformrc

providers {
  k8s = "/$GOPATH/bin/terraform-provider-k8s"
}

I'm curious about that leading slash, is it intentional or a mistake? I did my best to read through the Terraform configuration syntax docs to find out whether it's special syntax for interpolating environment variables, but couldn't find anything.