docs: correct ESM import paths for Node.js compatibility

[codersjj]

Updated the documentation to clarify that native Node.js ESM users should use the /lib path with a .js extension. The /es directory contains source code without file extensions in its internal imports, which causes ERR_MODULE_NOT_FOUND in native Node.js environments (as they don't perform automatic extension resolution).

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (784e52a) to head (fb8838d).

Additional details and impacted files

@@            Coverage Diff            @@
##            master     #2642   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          114       114           
  Lines         2572      2572           
  Branches       651       651           
=========================================
  Hits          2572      2572           

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[WikiRik]

We should add tests for this as well, right? So we don't,t accidentally break this behaviour