Fix user docs.

Fix user docs.

Was missing the end of a code block, so it was very hard to read.

BUG=

Committed: https://crrev.com/ceaaa719b3335338c58d81946d784df7561f5b0d
Cr-Commit-Position: refs/heads/master@{#355911}

[martiniss, 2015-10-23 21:23:36]

martiniss@chromium.org changed reviewers:
+ dpranke@chromium.org

[martiniss, 2015-10-23 21:23:36]

PTAL

[Dirk Pranke, 2015-10-23 21:26:02]

ah, yes, thank you!

lgtm

[martiniss, 2015-10-23 21:39:52]

The CQ bit was checked by martiniss@chromium.org

[commit-bot: I haz the power, 2015-10-23 21:40:07]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1402423005/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1402423005/1

[commit-bot: I haz the power, 2015-10-23 22:45:33]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-10-23 22:46:29]

Patchset 1 (id:??) landed as
https://crrev.com/ceaaa719b3335338c58d81946d784df7561f5b0d
Cr-Commit-Position: refs/heads/master@{#355911}