Fix promlint order algorithm not work issue.
Fix promlint order algorithm not work issue.

Signed-off-by: RainbowMango <afe9e0c981c750041bb0a26c0820c4a35df5580c@huawei.com>

prometheus/prometheus,alileza/prometheus,keegancsmith/prometheus,GoogleCloudPlatform/prometheus,GoogleCloudPlatform/prometheus,prometheus/prometheus,kangwoo/prometheus,prometheus/prometheus,kangwoo/prometheus,GoogleCloudPlatform/prometheus,keegancsmith/prometheus,alileza/prometheus,GoogleCloudPlatform/prometheus,alileza/prometheus,Gouthamve/prometheus,keegancsmith/prometheus,kangwoo/prometheus,prometheus/prometheus,kangwoo/prometheus,alileza/prometheus,keegancsmith/prometheus,Gouthamve/prometheus,prometheus/prometheus,keegancsmith/prometheus,Gouthamve/prometheus,GoogleCloudPlatform/prometheus,Gouthamve/prometheus,alileza/prometheus