hcl/printer: cleanup how we handle heredocs
hcl/printer: cleanup how we handle heredocs

hashicorp/hcl,savaki/hcl,strivecast/hcl,hashicorp/hcl,strivecast/hcl,strivecast/hcl,strivecast/hcl,strivecast/hcl,hashicorp/hcl,hashicorp/hcl,KONTRAKT-DLL/hcl,hashicorp/hcl