fix: adjust build tag position in export_offline.go

Signed-off-by: mikkeyf <1647228132@qq.com>

Author: Mikkey-f

cmd/subcmd/export_offline.go

@@ -1,6 +1,3 @@
-//go:build offline
-// +build offline
-
 // Copyright 2025 openGemini Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
@@ -15,6 +12,9 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build offline
+// +build offline
+
 package subcmd
 
 import (

cmd/subcmd/export_online.go

@@ -1,6 +1,3 @@
-//go:build !offline
-// +build !offline
-
 // Copyright 2025 openGemini Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
@@ -15,6 +12,9 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build !offline
+// +build !offline
+
 package subcmd
 
 import (