Update api_handler.rs

修正了一个可能导致群头衔无法正常生效的参数传递

Author: hybridsakura

src/api_handler.rs

@@ -262,7 +262,7 @@ pub async fn handle_set_group_special_title(
 ) -> RCResult<SetGroupSpecialTitleResp> {
     // TODO duration 无效
     bot.client
-        .group_edit_special_title(req.group_id, req.group_id, req.special_title)
+        .group_edit_special_title(req.group_id, req.user_id, req.special_title)
         .await?;
     Ok(SetGroupSpecialTitleResp {})
 }