[docs] Add links to documentation on addressing flake

Bug: 1124430
Change-Id: I69b3f9de37b1331feb8e4bf0462c22e9b2b2a2d2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2521204
Reviewed-by: Nick Burris <[email protected]>
Commit-Queue: Stephen McGruer <[email protected]>
Cr-Commit-Position: refs/heads/master@{#824565}
1 file changed