Launch Week III Day 4: User Auth

User Auth` allows you to tailor documentation content to specific users based on their identifiers, enabling more relevant and contextualized information. This can streamline the onboarding process for new developers by providing them with personalized guides and features. To implement `User Auth`, users must be authenticated using one of two methods: shared session or JWT, and then access the `userContext` variable to retrieve user-specific information. The feature is currently available only for select enterprise organizations, and its implementation can help improve the overall developer experience.