Simplify Documentation to Grade 10 Reading Level

[mintlify]

Original Instruction: Make my homepage more readable, to a grade 10 level please

This pull request improves the readability of our documentation by simplifying the content to a Grade 10 reading level. The changes affect multiple documentation sections including quickstart guides, API documentation, and integration guides.

Key Changes:

• Simplified complex technical explanations
• Improved sentence structure for better readability
• Adjusted vocabulary to match Grade 10 reading level
• Maintained technical accuracy while increasing accessibility

Files Modified:

• Core documentation: quickstart.mdx, text.mdx, list-table.mdx
• API documentation: multiple files in api-playground/openapi/
• Authentication: JWT and OAuth setup guides
• Integration guides: analytics, privacy, and support
• Settings and configuration files
• Reusable content components

These changes will make our documentation more accessible while maintaining its technical accuracy and comprehensiveness.