Worked on the yangshun/tech-interview-handbook repository to enhance documentation clarity by standardizing the definition of the degree of a tree in the tree.md file. This update addressed ambiguity in the reference material, making it easier for readers and new contributors to understand key concepts during interview preparation. The approach involved technical writing and documentation best practices, utilizing Markdown for content formatting and Git-based collaboration for version control and issue tracking. No bugs were fixed during this period, with the primary focus on improving onboarding and aligning documentation with established guidelines. The work demonstrated attention to detail and process-oriented documentation updates.