docs(exercise-3): fix hint anchors + add marketplace-actions guide#7

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ShmuelMax100 wants to merge 2 commits intomainfrom

docs/exercise-3-hints-and-marketplace

Commits on May 2, 2026

docs(exercise-3): fix hint anchors + add marketplace-actions guide

Shmuel Max
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Commits on May 3, 2026

docs(ex3): point hint TODO ⑩ to exact copy-paste line in marketplace-actions.md

Shmuel Max
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Copilot
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