Worked on the mastering-cardano repository, focusing on improving the accuracy of protocol documentation. Addressed a critical documentation bug by correcting a typographical error in the Ouroboros Leios protocol description, updating the year from 2205 to 2025 to ensure technical clarity. Utilized adoc for documentation editing, demonstrating attention to detail and commitment to maintaining high standards in technical writing. No new features were introduced during this period, but the work laid the foundation for ongoing documentation quality improvements. The contribution reflects a methodical approach to documentation maintenance, emphasizing precision and reliability in presenting protocol information to the developer community.