docs: readme

[Radovenchyk]

I added a link that was missing in the documentation

Checklist before merging

• If this PR has some consensus breaking changes, I added the corresponding breaking:: labels
  • This will require 2 reviewers to approve the changes
• If this PR requires changes to the docs or specs, a corresponding PR is opened in the namada-docs repo
  • Relevant PR if applies:
• If this PR affects services such as namada-indexer or namada-masp-indexer, a corresponding PR is opened in that repo
  • Relevant PR if applies:

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 74.46%. Comparing base (b6fcfb2) to head (4668ff8).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4207      +/-   ##
==========================================
- Coverage   74.47%   74.46%   -0.02%     
==========================================
  Files         342      342              
  Lines      107773   107773              
==========================================
- Hits        80262    80251      -11     
- Misses      27511    27522      +11     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.