代码格式微调

upgrade.service/upgrade.go

@@ -177,6 +177,7 @@ func (p *program) upgradeService(service serviceUpgradeConfig) (string, string,
 	targetVersion := nextVersionDir(currentDir)
 	targetDir := filepath.Join(service.InstallPath, targetVersion)
 	targetName := filepath.Join(targetVersion, service.Name)
+
 	pkg := filepath.Join(os.TempDir(), service.Name+".tar.gz")
 	defer os.Remove(pkg)