fix json-rpc-peer.d.ts definition

[lhr0909]

Checklist

• Commit Messages follow the Conventional Commits pattern
  • A feature commit message is prefixed "feat:"
  • A bugfix commit message is prefixed "fix:"
• Tests for the changes have been added
• CI has been passed. (GitHub actions all turns green)
• SLA has been signed

Description

please describe the changes that you are making, with the related issue number.

This resolved #2026 .

[huan]

It's great to receive this PR!

Please check the CI and make it green first, so that we can be able to inspect it later.

Thank you very much!

[huan]

ping @lhr0909

Please let me know if you still want to work on this PR, and if so I'd like to continue our discussion.