tiup-component-cluster-import.md: fix a typo (#7000)#7053

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ti-chi-bot merged 2 commits intopingcap:release-5.2from ti-chi-bot:cherry-pick-7000-to-release-5.2

Sep 1, 2021

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Commits on Sep 1, 2021

tiup-component-cluster-import.md

Xiaozhen Liu
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Liuxiaozhen12
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