Worked on the astral-sh/ruff repository to enhance the accuracy of rule documentation, specifically addressing the RUF015 guideline. Focused on clarifying the behavior of IndexError exceptions, the contribution updated documentation to reflect that both index access and the pop() method on empty collections can raise this error. This targeted fix aligned the documentation with actual runtime behavior, reducing confusion for contributors and users. The work involved careful review and precise editing, leveraging skills in documentation and familiarity with Rust. By improving onboarding materials and user guidance, the update helped maintain repository reliability and reduced support overhead for the project.