Add documentation link for canary bots

Bug: skia:10477
Change-Id: Ie3a68dc718ef17d7e185638757903ee480910639
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/304063
Reviewed-by: Eric Boren <borenet@google.com>
Commit-Queue: Ravi Mistry <rmistry@google.com>
diff --git a/infra/bots/task_drivers/canary/canary.go b/infra/bots/task_drivers/canary/canary.go
index 1f08719..dccaecd 100644
--- a/infra/bots/task_drivers/canary/canary.go
+++ b/infra/bots/task_drivers/canary/canary.go
@@ -76,6 +76,9 @@
 		td.Fatal(ctx, skerr.Wrap(err))
 	}
 
+	// Add documentation link for canary rolls.
+	td.StepText(ctx, "Canary roll doc", "https://goto.google.com/autoroller-canary-bots")
+
 	if err := waitForCanaryRoll(ctx, manualRollDB, req.Id); err != nil {
 		td.Fatal(ctx, skerr.Wrap(err))
 	}