Fix some style nites in PerformanceTests/README.md

Fix some style nites in PerformanceTests/README.md

BUG=715344
TBR=wangxianzhu@chromium.org

Review-Url: https://codereview.chromium.org/2894363002
Cr-Commit-Position: refs/heads/master@{#473462}
Committed: https://chromium.googlesource.com/chromium/src/+/6db4c7cb15bb378856b4e11427035552cc39e300

[nednguyen, 2017-05-21 03:43:55]

The CQ bit was checked by nednguyen@google.com

[commit-bot: I haz the power, 2017-05-21 03:44:06]

CQ is trying da patch.

Follow status at:
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-05-21 05:26:21]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1495338235631500, "parent_rev":
"ed54f8394f536183a96aa9678483e94282d07044", "commit_rev":
"6db4c7cb15bb378856b4e11427035552cc39e300"}

[commit-bot: I haz the power, 2017-05-21 05:26:30]

Description was changed from

==========
Fix some style nites in PerformanceTests/README.md

BUG=715344
TBR=wangxianzhu@chromium.org
==========

to

==========
Fix some style nites in PerformanceTests/README.md

BUG=715344
TBR=wangxianzhu@chromium.org

Review-Url: https://codereview.chromium.org/2894363002
Cr-Commit-Position: refs/heads/master@{#473462}
Committed:
https://chromium.googlesource.com/chromium/src/+/6db4c7cb15bb378856b4e1142703...
==========

[commit-bot: I haz the power, 2017-05-21 05:26:31]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/6db4c7cb15bb378856b4e1142703...