docs: fix typos and improve clarity in contribution guidelines

[ersachin3112]

This PR contains a:

• bugfix
• new feature
• code refactor
• test update
• typo fix
• metadata update

Motivation / Use-Case

fix typos and improve clarity in contribution guidelines, corrected grammatical issues, improved sentence structure, and refined formatting across the contribution guidelines in README.md

Breaking Changes

No

Additional Info

No

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.02%. Comparing base (149b17f) to head (5d93f67).
Report is 14 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #250   +/-   ##
=======================================
  Coverage   98.02%   98.02%           
=======================================
  Files           5        5           
  Lines         355      355           
  Branches      105      105           
=======================================
  Hits          348      348           
  Misses          6        6           
  Partials        1        1           

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