docs: Deno v2 doesn't need commonjs polyfills

[wellwelwel]

Closes #855.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.56%. Comparing base (7b748a4) to head (6c46ed7).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #893      +/-   ##
==========================================
- Coverage   98.62%   98.56%   -0.06%     
==========================================
  Files          35       35              
  Lines        1744     1744              
  Branches       15       15              
==========================================
- Hits         1720     1719       -1     
  Misses         11       11              
- Partials       13       14       +1     

Flag	Coverage Δ
linux	98.50% <ø> (ø)
osx	98.50% <ø> (-0.06%)	⬇️
windows	98.50% <ø> (ø)

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