fix: adjust declaration return types

freeCodeCamp / solana-curriculum

freeCodeCamp Solana Curriculum

BSD 3-Clause "New" or "Revised" License

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Closed ChiefWoods closed 4 months ago

ChiefWoods commented 5 months ago

Checklist:

[x] I have read freeCodeCamp's contribution guidelines.
[x] My pull request has a descriptive title (not a vague title like Update index.md)

Closes #XXXXX