Update link to testing infrastructure.

No-Try: true
Docs-Preview: https://skia.org/?cl=18596
Change-Id: I0d3cae67ccb7db06f3a85a0b1360873a77bbe78f
Reviewed-on: https://skia-review.googlesource.com/18596
Reviewed-by: Eric Boren <borenet@google.com>
Commit-Queue: Ben Wagner <benjaminwagner@google.com>
1 file changed