fix: cli: lotus-miner sectors extend command

[beck-8]

Related Issues

https://github.com/filecoin-project/lotus/issues/11927

Proposed Changes

Additional Info

Checklist

Before you mark the PR ready for review, please make sure that:

• [x] Commits have a clear commit message.
• [x] PR title is in the form of of <PR type>: <area>: <change being made>
  • example: fix: mempool: Introduce a cache for valid signatures
  • PR type: fix, feat, build, chore, ci, docs, perf, refactor, revert, style, test
  • area, e.g. api, chain, state, market, mempool, multisig, networking, paych, proving, sealing, wallet, deps
• [ ] If the PR affects users (e.g., new feature, bug fix, system requirements change), update the CHANGELOG.md and add details to the UNRELEASED section.
• [ ] New features have usage guidelines and / or documentation updates in
  • [ ] Lotus Documentation
  • [ ] Discussion Tutorials
• [ ] Tests exist for new functionality or change in behavior
• [ ] CI is green

[rjan90]

Thank you so much for the PR. I think this PR just needs a make gen (run the command while in your /lotus folder), to pass the final check.