Update text for auto-fetch feature

Bug: 908523
Change-Id: I014e6f5213096d7dd3f6f88454ac338eb4c9ed3c
Reviewed-on: https://chromium-review.googlesource.com/c/1407113
Reviewed-by: Asanka Herath <asanka@chromium.org>
Commit-Queue: Dan H <harringtond@google.com>
Cr-Commit-Position: refs/heads/master@{#622055}
1 file changed