small typo on 'setting up dev environment' doc

[Cindy Lu]

http://docs.openstack.org/developer/cinder/devref/development.environment.html#manually-installing-and-using-the-virtualenv

This will install all of the Python packages listed in the requirements.txt file into your virtualenv. There will also be some additional packages (pip, setuptools) that are installed by the tools/install_venv.py file into the virutalenv.

virutalenv ==> virtualenv

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/118566

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/118566
Committed: https://git.openstack.org/cgit/openstack/cinder/commit/?id=6eba7aa1035ec175d3b147e7c74b160a75d6aa36
Submitter: Jenkins
Branch: master

commit 6eba7aa1035ec175d3b147e7c74b160a75d6aa36
Author: liyingjun <email address hidden>
Date: Fri Aug 8 15:04:35 2014 +0800

    fix a small typo in development.environment.rst

    virutalenv ==> virtualenv

    Change-Id: If090ab7b92230fba15d7be98a84b51cce507bedd
    Closes-bug: 1358531