Fix stale and broken documentation across Shakapacker guides

**Metr Tracking Issue**

**Category**: large_feature
**Commits**: 1
**Lines changed**: 700 (+226/-474)
**Time span**: 0 hours

**PRs**:
- #1023 - Fix stale and broken documentation across Shakapacker guides

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<summary>Commit details</summary>

- `5ac0956` Fix stale and broken documentation across Shakapacker guides (#1023) (+226/-474)

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