provide usage documentation with config examples

[todo]

dns-check/cmd/root.go

Lines 55 to 60 in 4af5fbd

	//@todo: provide usage documentation with config examples
	if genDoc := os.Getenv("GEN_DOC"); genDoc == "true" {
	err := doc.GenMarkdownTree(rootCmd, "./docs")
	if err != nil {
	log.Errorf("Failed generating docs: %v", err)
	}

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This issue was generated by todo based on a todo comment in 4af5fbd. It's been assigned to @undefined because they committed the code.