Worked on the JetBrains/kotlin-web-site repository to improve the accuracy of Kotlin API documentation, specifically addressing the behavior of the elementAt() function in collections. Focused on correcting the documented exception from NoSuchElementException to IndexOutOfBoundsException, ensuring alignment with the Kotlin language specification and actual collection semantics. Utilized Markdown for precise documentation updates, emphasizing clarity and reducing potential confusion for developers referencing the API. Maintained strong traceability by linking the change to a specific commit and pull request, demonstrating attention to governance. The work centered on documentation skills, delivering a targeted, low-risk improvement that enhances onboarding and developer understanding.