fix indents

main.go

@@ -238,7 +238,7 @@ func fileMatches(path string, patterns []string) bool {
 // addLicense add a license to the file if missing.
 //
 // It returns true if the file was updated.
-func addLicense(path string, fmode os.FileMode, tmpl *template.Template, data  licenseData) (bool, error) {
+func addLicense(path string, fmode os.FileMode, tmpl *template.Template, data licenseData) (bool, error) {
 	var lic []byte
 	var err error
 	lic, err = licenseHeader(path, tmpl, data)