fix lint

Author: wxiaoguang

routers/web/user/search.go

@@ -4,12 +4,12 @@
 package user
 
 import (
-	"code.gitea.io/gitea/modules/optional"
-	"code.gitea.io/gitea/modules/setting"
 	"net/http"
 
 	"code.gitea.io/gitea/models/db"
 	user_model "code.gitea.io/gitea/models/user"
+	"code.gitea.io/gitea/modules/optional"
+	"code.gitea.io/gitea/modules/setting"
 	"code.gitea.io/gitea/services/context"
 	"code.gitea.io/gitea/services/convert"
 )