Add ehllo world to quickstart

[mintlify-development]

Added ehllo world to the top of quickstart.mdx

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Note

Low Risk
Single documentation-only change with no impact on runtime behavior or security-sensitive logic.

Overview
Adds a new introductory line (ehllo world) near the top of quickstart.mdx before the existing Quickstart content.

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Cursor Bugbot has reviewed your changes and found 1 potential issue.

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Test text accidentally committed to documentation

High Severity

The string ehllo world appears to be a test or debug phrase (a misspelling of "hello world") accidentally added to the top of the production quickstart documentation page. This would be visible to all users visiting the documentation site and degrades the professional quality of the page.