Changelog fragment for #1699

changelog.d/1699-zh-hant-generated.md

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+- Generate the Traditional Chinese catalog instead of translating it:
+  `npm run i18n -- --zh-hant` writes `zh-Hant` from `zh-CN` with OpenCC `s2tw`
+  and its character corrections, and `npm test` fails, naming the key, when
+  `zh-Hant` is edited by hand (German, @gekh, #1699).