Documentation button is absent in betas for some Items

1. What happened
Some objects (Font, AnimatorControllerOverride) lost link to Documentation in Editor.
2. How we can reproduce it using the example you attached

1. Open Unity.
2. Add a Font to project, or add Animator Override Controller (or user project attached).
3. Select Font/AnimatorOverrideController in Project folder.
Actual result: There is no icon (Reference to Documentation) in Inspector.
Expected result: There is an icon (Reference to Documentation) in Inspector.

Does not repro in 5.4.0b11.
Reproduces in 5.4.0b12-13.