fix: quote outdoor fair reservation count aliases

ruoyi-bussiness/src/main/java/com/ruoyi/cms/mapper/OutdoorFairBoothBookingMapper.java

@@ -23,7 +23,7 @@ public interface OutdoorFairBoothBookingMapper extends BaseMapper<OutdoorFairBoo
     /** 批量统计有效预定展位，供招聘会列表使用，避免逐条招聘会查询。 */
     @Select({
             "<script>",
-            "SELECT fair_id AS \\\"fairId\\\", COUNT(DISTINCT booth_id) AS \\\"reservedBoothCount\\\"",
+            "SELECT fair_id AS \"fairId\", COUNT(DISTINCT booth_id) AS \"reservedBoothCount\"",
             "FROM cms_outdoor_fair_booth_booking",
             "WHERE del_flag = '0' AND status = 'reserved' AND fair_id IN",
             "<foreach collection='fairIds' item='fairId' open='(' separator=',' close=')'>",