Monthly summary for 2025-12 (ruby/www.ruby-lang.org): Delivered two focused documentation improvements that enhance Windows onboarding and overall documentation quality. Key features delivered: Winget-based Ruby Windows installation guide improvements with clearer commands and examples to improve install reliability; Bug fix: corrected the PowerShell syntax highlighting tag in the documentation to ensure accurate representation in code blocks. Impact: smoother Windows installation experience for Ruby users, reduced confusion in docs, and fewer support inquiries. Accomplishments: demonstrated strong documentation engineering, alignment with Rouge syntax highlighting standards, and traceable changes via commits. Technologies/skills demonstrated: documentation tooling and standards, Windows command-line workflows, Rouge syntax highlighting, version-controlled docs, and localization-aware edits.