chore: update READMEs

[vegeris]

Summary

We want to avoid maintaining two READMEs

Requirements

• I've read and understood the Contributing Guidelines and have done my best effort to follow them.
• I've read and agree to the Code of Conduct.
• I've ran deno task test after making the changes.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.51%. Comparing base (61784c5) to head (e188f6d).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #508   +/-   ##
=======================================
  Coverage   98.51%   98.51%           
=======================================
  Files          67       67           
  Lines        2567     2567           
  Branches      148      148           
=======================================
  Hits         2529     2529           
  Misses         38       38           

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