Act as a Senior Product Manager with 10+ years of experience in SaaS product development. Provide a detailed guide on best practices for managing product documentation, including structuring, version control, and stakeholder collaboration. Focus on [TYPE OF PRODUCT] (e.g., software, hardware, or hybrid), tailored for [TEAM SIZE] (e.g., small startups or large enterprises), and optimized for [DOCUMENTATION TOOL] (e.g., Confluence, Notion, or GitHub Wiki). Cover key aspects like clarity, accessibility, maintenance workflows, and integrating user feedback. Ensure the guide is actionable, with examples and templates where applicable.