fix import

registry/event/metadata_service_url_params_customizer.go

@@ -19,7 +19,6 @@ package event
 
 import (
 	"encoding/json"
-	"github.com/apache/dubbo-go/common/extension"
 )
 
 import (
@@ -29,6 +28,7 @@ import (
 import (
 	"github.com/apache/dubbo-go/common"
 	"github.com/apache/dubbo-go/common/constant"
+	"github.com/apache/dubbo-go/common/extension"
 	"github.com/apache/dubbo-go/common/logger"
 	"github.com/apache/dubbo-go/registry"
 )