Fix typos and enhance README documentation - #975

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Greptile Summary

The PR corrects typographical errors and improves wording in the README.

• Fixes misspellings in the API and encryption descriptions.
• Rephrases the system-user event-processing documentation.
• Changes “serverless” to the nonstandard “server-less” spelling.

Confidence Score: 4/5

The PR appears safe to merge after correcting the non-blocking “server-less” terminology regression.

The changes affect documentation only; the sole accepted concern is a minor terminology issue in the API description.

Files Needing Attention: README.md

Important Files Changed

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Up to standards ✅

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