Fix: Correct Typos and Improve Documentation Clarity

[cypherpepe]

Description

Why this should be merged

This pull request fixes typographical errors and improves clarity in multiple documents related to the Teleporter project.

How this works

• Corrected typos in various documentation files (CONTRIBUTING.md, README.md).
• Improved consistency in technical terms and descriptions.

How this was tested

• Verified that the documentation changes render correctly and do not impact code execution or logic.

How is this documented

• Changes are detailed in the commit history and described in this pull request.

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Changes Summary

Files Modified

1. CONTRIBUTING.md

   • Corrected: modfiication → modification

2. contracts/teleporter/README.md

   • Corrected: acheived → achieved
   • Corrected: deliverying → delivering

3. contracts/teleporter/registry/README.md

   • Corrected: priveleges → privileges