Update customize a them guide to include "template" in the documentjs example.

[adrifolio]

This is what is currently in the guide:

Need to add "template" as follows:

{
    "siteDefaults": {
      "templates": "style-guide-theme/templates",
      "static": "style-guide-theme/static"
    },
   "sites": {
        "styles": {
            "glob": "styles/**/*.{md,less,md}",
            "parent": "style-guide",
            "dest": "./styleguide"
        }
    }
}

[leoj3n]

Does documentation surrounding this change need to be added?

[tomgreever]

@leoj3n I don't think this is a change in the way it works, I believe it was not properly documented to begin with. What's on this page is not complete: http://documentcss.com/docs/customize.html

[leoj3n]

That page also has typos :/