docs: add contribution examples

[PabloCastellano]

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• My change requires a documentation update, and I have done it.
• I have added tests to cover my changes.
• I have filled out the description and linked the related issues.

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[changeset-bot]

⚠️ No Changeset found

Latest commit: 73a0123

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

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📦 Next.js Bundle Analysis for @blobscan/web

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This PR introduced no changes to the JavaScript bundle! 🙌

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.98%. Comparing base (0a2a94c) to head (73a0123).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #824      +/-   ##
==========================================
- Coverage   87.01%   86.98%   -0.04%     
==========================================
  Files         174      174              
  Lines       12656    12665       +9     
  Branches     1298     1301       +3     
==========================================
+ Hits        11013    11017       +4     
- Misses       1643     1648       +5     

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