docs: update broken link

[JacksonEi]

PR Description

Overview

This PR includes updates to the adr-001-repo.md documentation file within the docs/architecture directory. The changes are aimed at aligning the lite client specifications with the latest Tendermint documentation and preparing for a TLA+ implementation.

Changes

• Added a new section that emphasizes the importance of closely following the lite client spec and working in parallel on a TLA+ implementation.
• Added a note regarding the signers(commit) function, clarifying that while the spec assumes this function returns validators for a given commit, in practice, the validator set itself is not included in the commit.

Verification

• Referenced an issue explaining the need for the change
  • This PR addresses the need to update our documentation to align with the latest Tendermint lite client specifications and to prepare for a TLA+ implementation. An associated issue has been filed and is referenced here.
• Updated all relevant documentation in docs
  • The adr-001-repo.md file within the docs/architecture directory has been updated to reflect the latest specifications and implementation plans.
• Updated all code comments where relevant
  • No code comments were relevant to the changes made in this PR.
• Wrote tests
  • No new tests were required as this PR only updates documentation.
• Added entry in .changelog/
  • An entry has been added to the .changelog/ directory to document this update.

Additional Notes

• Please review the changes and ensure they meet the project's standards.
• If additional documentation updates are necessary, please suggest them in the comments.

PR Checklist

• This PR is ready to be merged.
• The title of this PR follows the conventional commits standard.
• All changes have been tested locally.

Thank you for reviewing this PR. If you have any questions or require further information, please let me know.