Worked on the dotnet/csharplang repository to improve the accuracy of documentation related to union types. Focused on refining the TypeUnions.md file by correcting an example that previously used tuple syntax instead of the correct union syntax, ensuring that the documentation aligns with the language specification. Utilized Markdown for documentation updates and applied attention to detail in technical writing to reduce developer confusion and streamline onboarding. No code changes were made, but the update enhanced the clarity of learning resources. Demonstrated skills in documentation and technical communication, contributing to a more consistent and reliable developer experience for C# users.