[ko]: add index.md for `web/glossary/promise`#16223

Merged

hochan222 merged 2 commits intomdn:mainfrom IMHOJEONG:web/glossary/promise

Oct 25, 2023

+18

Commits on Sep 29, 2023

[add]: add index.md for web/glossary/promise
IMHOJEONG
committed

Commits on Oct 10, 2023

[ko]: revise index.md

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