Add my new entry to Social engineering

[SudoSan662]

Description

I have significantly updated and expanded the existing "Social Engineering" entry. The previous version was very brief; I have now added detailed sections on common techniques (Phishing, Baiting, etc.) and comprehensive prevention strategies for both businesses and individuals. I also improved the overall formatting for better readability.

Issue Solved

N/A (General content improvement)

Type of Change

• Editing an existing entry (fixing a typo, bug, issues, etc)
• Updating the documentation

Checklist

• All writings are my own.
• My entry follows the Codecademy Docs style guide.
• My changes generate no new warnings.
• I have performed a self-review of my own writing and code.
• I have checked my entry and corrected any misspellings.
• I have made corresponding changes to the documentation if needed.
• I have confirmed my changes are not being pushed from my forked main branch.
• I have confirmed that I'm pushing from a new branch named after the changes I'm making.
• I have linked any issues that are relevant to this PR in the Issues Solved section.

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.

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