complex-numbers: sync

[rabestro]

Sync the complex-numbers exercise with the latest data, as defined in https://github.com/exercism/problem-specifications/tree/main/exercises/complex-numbers.

[github-actions]

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[BNAndras]

These changes are pretty thorough. Perhaps this would be a better fit for the upstream problem-specifications repo? Directly editing instructions.md runs the risk of maintainers overwriting your changes when they sync from that repo.

[rabestro]

These changes are pretty thorough. Perhaps this would be a better fit for the upstream problem-specifications repo? Directly editing instructions.md runs the risk of maintainers overwriting your changes when they sync from that repo.

These changes are already in the problem-specifications repository. The current track for the Scala language is outdated. I don't know if there is a utility that centrally synchronizes all the descriptions in the Scala track to the latest version that are in the problem-specifications repository.

Outdated description in the Scala track:
https://github.com/exercism/scala/blob/main/exercises/practice/complex-numbers/.docs/instructions.md

Current description in problem-specifications repository:
https://github.com/exercism/problem-specifications/blob/main/exercises/complex-numbers/description.md

I updated one exercise description. It was outdated. I don't know how to update all similar files at once.

[BNAndras]

https://exercism.org/docs/building/configlet/sync configlet sync will sync metadata, tests, and documents for you. You’ll still need to implement any added tests (not sure if this track uses a generator for that). Generally I sync tests separately from the metadata and documents, one exercise at a time. That makes PR review easier.

[rabestro]

https://exercism.org/docs/building/configlet/sync configlet sync will sync metadata, tests, and documents for you. You’ll still need to implement any added tests (not sure if this track uses a generator for that). Generally I sync tests separately from the metadata and documents, one exercise at a time. That makes PR review easier.

I confirm that this pull request was made by command:

 ./bin/configlet sync --exercise complex-numbers --update --docs
Updating cached 'problem-specifications' data...
Checking exercises...
[warn] docs: instructions unsynced: complex-numbers
sync the above docs ([y]es/[n]o)? y
Updated the docs for 1 Practice Exercise
The `complex-numbers` exercise has up-to-date docs!

[rabestro]

https://exercism.org/docs/building/configlet/sync configlet sync will sync metadata, tests, and documents for you. You’ll still need to implement any added tests (not sure if this track uses a generator for that). Generally I sync tests separately from the metadata and documents, one exercise at a time. That makes PR review easier.

I close this pull request in favour of a full sync for the whole Scala track
#856