Yuan Wang updated the Redis Sentinel documentation in the redis/docs repository, focusing on clarifying the sentinel_total_tilt metric. Using Markdown and documentation best practices, Yuan described how this field tracks the number of times a Sentinel instance enters TILT mode, aligning the documentation with recent code changes. This update addressed a gap in operator guidance, reducing ambiguity around Sentinel observability and helping users better interpret system behavior. Yuan ensured the update was traceable by linking the relevant commit and maintaining Git history. The work demonstrated attention to detail in technical writing and improved the overall quality and usability of Redis documentation.