workflow: optimize external link checks (#22894)#22896

ti-chi-bot[bot] merged 2 commits into

pingcap:release-8.5pingcap/docs:release-8.5from

ti-chi-bot:cherry-pick-22894-to-release-8.5ti-chi-bot/docs:cherry-pick-22894-to-release-8.5Copy head branch name to clipboard