Alexey contributed to the arrow-kt/arrow repository by refining the documentation for the Either.kt module, focusing on improving API naming accuracy. He updated the KDoc comments to correctly reference the getOrElse function and removed outdated mentions of the deprecated getOrHandle method, ensuring that the documentation aligns with the current API. This work, performed in Kotlin, enhanced the clarity and discoverability of the library for new and existing users without introducing any code changes. Alexey’s efforts centered on documentation skills, addressing onboarding challenges and maintaining library stability by keeping the technical references up to date and consistent with actual usage.