课程列表课时数据有误

修复问题文件：appplication\admin\model\special

修改方法：getLecturerList

    public static function getLecturerList($where)
    {
        $data = self::setMerWhere($where, 'l')->page((int)$where['page'], (int)$where['limit'])->select();
        $data = count($data) ? $data->toArray() : [];
        foreach ($data as $key => &$item) {
            $item['recommend'] = RecommendRelation::where('a.link_id', $item['id'])->where('a.type', 6)->alias('a')
                ->join('__RECOMMEND__ r', 'a.recommend_id=r.id')->column('a.id,r.title');
            $item['web_recommend'] = WebRecommendRelation::where('a.link_id', $item['id'])->where('a.type', 2)->alias('a')
                ->join('__WEB_RECOMMEND__ r', 'a.recommend_id=r.id')->column('a.id,r.title');
            $curriculum = Special::PreWhere()->where(['lecturer_id' => $item['id'], 'mer_id' => $item['mer_id']])->count();
            if ($item['curriculum'] != $curriculum) {
                self::where('id', $item['id'])->update(['curriculum' => $curriculum]);
                $item['curriculum'] = $curriculum;
            }
        }
        $count = self::setMerWhere($where, 'l')->count();
        return compact('data', 'count');
    }