Also list Global Index as Partitioning feature (as well as Index) (#20604)#20606

ti-chi-bot[bot] merged 4 commits intopingcap:release-8.5pingcap/docs-cn:release-8.5from

ti-chi-bot:cherry-pick-20604-to-release-8.5ti-chi-bot/docs-cn:cherry-pick-20604-to-release-8.5Copy head branch name to clipboard