docs: Update README.md

[eltociear]

Summary 📝

outine -> outline

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 61.32%. Comparing base (8e09b6d) to head (332b08a).
Report is 2 commits behind head on main.

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Additional details and impacted files

@@           Coverage Diff           @@
##             main      #15   +/-   ##
=======================================
  Coverage   61.32%   61.32%           
=======================================
  Files          19       19           
  Lines        2136     2136           
=======================================
  Hits         1310     1310           
  Misses        826      826           

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[AdityaNG]

Thanks for the typo fix!