Further improvements to third-party docs

[email protected]

Change-Id: I2ef00e9c12da288da93a03f9528e6e276713b8b3
Reviewed-on: https://chromium-review.googlesource.com/868824
Reviewed-by: Nico Weber <[email protected]>
Commit-Queue: Aaron Gable <[email protected]>
Cr-Commit-Position: refs/heads/master@{#529499}
1 file changed