docs: update the url of Ninja web site

docs: update the url of Ninja web site

This patch updates the url of Ninja to point to the new one that is now
https://ninja-build.org/.

BUG=None
R=thakis@chromium.org

Committed: https://crrev.com/a24cfca553fc5d21783c87a2d1662b5bd34f4a01
Cr-Commit-Position: refs/heads/master@{#377847}

[Nico, 2016-02-25 17:56:52]

lgtm

[tfarina, 2016-02-26 07:49:29]

The CQ bit was checked by tfarina@chromium.org

[commit-bot: I haz the power, 2016-02-26 07:49:56]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1730173005/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1730173005/1

[commit-bot: I haz the power, 2016-02-26 08:14:48]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-02-26 08:16:57]

Description was changed from

==========
docs: update the url of Ninja web site

This patch updates the url of Ninja to point to the new one that is now
https://ninja-build.org/.

BUG=None
R=thakis@chromium.org
==========

to

==========
docs: update the url of Ninja web site

This patch updates the url of Ninja to point to the new one that is now
https://ninja-build.org/.

BUG=None
R=thakis@chromium.org

Committed: https://crrev.com/a24cfca553fc5d21783c87a2d1662b5bd34f4a01
Cr-Commit-Position: refs/heads/master@{#377847}
==========

[commit-bot: I haz the power, 2016-02-26 08:16:58]

Patchset 1 (id:??) landed as
https://crrev.com/a24cfca553fc5d21783c87a2d1662b5bd34f4a01
Cr-Commit-Position: refs/heads/master@{#377847}