Error executing command: unable to generate website: unexpected error: invalid checksum: no checksum found in: https://releases.hashicorp.com/terraform/0.13.2/terraform_0.13.2_SHA256SUMS

Running the `tfplugindocs` from the root of any provider repo generates the following error:

```
❯ tfplugindocs
rendering website for provider "terraform-provider-scaffolding"
exporting schema from Terraform
compiling provider "scaffolding"
Error executing command: unable to generate website: unexpected error: invalid checksum: no checksum found in: https://releases.hashicorp.com/terraform/0.13.2/terraform_0.13.2_SHA256SUMS

> ~/g/s/g/h/terraform-provider-scaffolding
```

Not sure what i'm doing incorrectly. I have tried on other repos `terraform-provider-unifi` and same results