[NaCl SDK] Fix typo in nacl_io_demo example

[NaCl SDK] Fix typo in nacl_io_demo example

Append Read/Write option should read "+a" not "+w".

R=bradnelson@chromium.org

Committed: https://crrev.com/222e343d2a743d406062ea69abd88a300350ef1f
Cr-Commit-Position: refs/heads/master@{#394859}

[bradnelson, 2016-05-19 19:34:54]

The CQ bit was checked by bradnelson@chromium.org

[bradnelson, 2016-05-19 19:34:55]

lgtm

[commit-bot: I haz the power, 2016-05-19 19:35:49]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1995763004/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1995763004/1

[commit-bot: I haz the power, 2016-05-19 20:55:47]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-05-19 20:57:31]

Description was changed from

==========
[NaCl SDK] Fix typo in nacl_io_demo example

Append Read/Write option should read "+a" not "+w".

R=bradnelson@chromium.org
==========

to

==========
[NaCl SDK] Fix typo in nacl_io_demo example

Append Read/Write option should read "+a" not "+w".

R=bradnelson@chromium.org

Committed: https://crrev.com/222e343d2a743d406062ea69abd88a300350ef1f
Cr-Commit-Position: refs/heads/master@{#394859}
==========

[commit-bot: I haz the power, 2016-05-19 20:57:32]

Patchset 1 (id:??) landed as
https://crrev.com/222e343d2a743d406062ea69abd88a300350ef1f
Cr-Commit-Position: refs/heads/master@{#394859}