少了个`.` (#2068)

Reviewed-on: https://gitea.com/xorm/xorm/pulls/2068
Reviewed-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: stepbystep2 <stepbystep2@noreply.gitea.io>
Co-committed-by: stepbystep2 <stepbystep2@noreply.gitea.io>

README_CN.md

@@ -214,7 +214,7 @@ type UserDetail struct {
 }
 
 var users []UserDetail
-err := engine.Table("user").Select("user.*, detail.*")
+err := engine.Table("user").Select("user.*, detail.*").
     Join("INNER", "detail", "detail.user_id = user.id").
     Where("user.name = ?", name).Limit(10, 0).
     Find(&users)