Chaewon Kong contributed to the google/cel-go repository by delivering a documentation-focused update that improved the readability and consistency of Go code comments. Concentrating on cel/library.go and ext/lists.go, Chaewon applied Go documentation best practices, such as refining godoc formatting and ensuring proper spacing around code examples and function definitions. This non-functional change did not alter any program behavior but enhanced the clarity of documentation, making it easier for new contributors to onboard and understand example usage. The work demonstrated attention to maintainability and alignment with project documentation standards, utilizing Go and documentation skills to support long-term codebase quality.