Update docs (#65)

* Update go mod and include go:generate for docs

* go generate

main.go

@@ -5,6 +5,16 @@ import (
 	"github.com/hashicorp/terraform-provider-boundary/internal/provider"
 )
 
+// Run "go generate" to format example terraform files and generate the docs for the registry/website
+
+// If you do not have terraform installed, you can remove the formatting command, but its suggested to
+// ensure the documentation is formatted properly.
+//go:generate terraform fmt -recursive ./examples/
+
+// Run the docs generation tool, check its repository for more information on how it works and how docs
+// can be customized.
+//go:generate go run github.com/hashicorp/terraform-plugin-docs/cmd/tfplugindocs
+
 func main() {
 	plugin.Serve(&plugin.ServeOpts{ProviderFunc: provider.New})
 }