Fixed the example JSON strings for Windows and Linux.

The example policies weren't valid JSON because they used single quotes
instead of double quotes.

BUG=None
R=pastarmovj@chromium.org

Review URL: https://codereview.chromium.org/512733004

git-svn-id: http://grit-i18n.googlecode.com/svn/trunk@174 7262f16d-afe8-6277-6482-052fa10e57b1
Link to the documentation for complex policies on Windows.

This change also makes that description localized.

BUG=chromium:381627
R=pastarmovj@chromium.org

Review URL: https://codereview.chromium.org/515923002

git-svn-id: http://grit-i18n.googlecode.com/svn/trunk@175 7262f16d-afe8-6277-6482-052fa10e57b1