fix: log formater not take effect if write file not enabled

internal/config/log.go

@@ -1,12 +1,12 @@
 package config
 
 import (
+	nested "github.com/antonfisher/nested-logrus-formatter"
 	"io"
 	"os"
 	"strings"
 	"time"
 
-	nested "github.com/antonfisher/nested-logrus-formatter"
 	log "github.com/sirupsen/logrus"
 )
 
@@ -41,6 +41,7 @@ func initLog() {
 		//设置双重输出
 		mw := io.MultiWriter(os.Stdout, f)
 		Logger.SetOutput(mw)
+	}
 
 	//设置输出格式
 	Logger.SetFormatter(&nested.Formatter{
@@ -49,4 +50,3 @@ func initLog() {
 		TimestampFormat: "2006-01-02 15:04:05",
 	})
 }
-}