Add Security Terminology Cheat Sheet

[mackowski]

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This PR fixes issue #1741.

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This PR introduces a new "Security Terminology Cheat Sheet" designed to help developers understand critical security concepts that are often confused, such as encoding vs. escaping and encryption vs. hashing.

Key changes:

• New file: cheatsheets/Security_Terminology_Cheat_Sheet.md containing definitions and practical distinctions.
• Updated Index.md: Added the new cheat sheet to the alphabetical index.
• Updated IndexASVS.md: Linked the new cheat sheet to sections V1.1, V6.1, V8.1, V11.1, and V15.1 for better discoverability.
• Fixed minor linting issues in the new cheat sheet using markdownlint.
• Ensured correct alphabetical ordering in Index.md.

Fixes #1741

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PR created automatically by Jules for task 13235860805931845989 started by @mackowski

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