clean done by fmt

main.go

@@ -132,7 +132,6 @@ func realMain(args []string) int {
 			sem <- 0
 			defer func() { <-sem }()
 
-
 			loader, err := jsonLoader(path)
 			if err != nil {
 				msg := fmt.Sprintf("%s: error: load doc %s\n", path, err)