How to reproduce:
1. Create a new Unity project
2. In the Hierarchy, create any legacy UI Button
3. Select the created UI GameObject under the Canvas
4. In the Inspector, navigate to the Canvas Renderer Component
5. Press the "?" button to open the documentation
6. Observe the results

Expected results: The opened documentation is for Unity UI 3.0+
Actual results: The opened documentation is for Unity UI 2.0

Reproducible with: 6000.0.27f1
Can't test with: 2021.3.46f1, 2022.3.52f1 (The opened documentation is not for the Unity UI package)

Reproducible on: macOS Sequoia 15.0.1 (M1)
Not reproducible on: No other environment tested