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Fix the dom-repeat element typo in the Contact Tab and fixed the
spacing between list elements, as seen here:
https://screenshot.googleplex.com/eb1d918c-0c7a-4890-8086-8ef893ef27f4.

Bug: 1093634
Change-Id: Ifc586dd982e28d3ee2853359cb8cfa8e220ceb0d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2368332Reviewed-by: Josh Nohle <nohle@chromium.org>
Commit-Queue: Juliet Levesque <julietlevesque@google.com>
Cr-Commit-Position: refs/heads/master@{#800440}