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 84.82%. Comparing base (c7ff30d) to head (18750a4).
Report is 19 commits behind head on master.

❗ There is a different number of reports uploaded between BASE (c7ff30d) and HEAD (18750a4). Click for more details.

HEAD has 16 uploads less than BASE

Flag	BASE (c7ff30d)	HEAD (18750a4)
	30	14

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1127      +/-   ##
==========================================
- Coverage   90.61%   84.82%   -5.80%     
==========================================
  Files           5        5              
  Lines         895     1041     +146     
  Branches      255      305      +50     
==========================================
+ Hits          811      883      +72     
- Misses         74      133      +59     
- Partials       10       25      +15     

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