{
    "server_groups": [
        {
            "id": "%(id)s",
            "name": "test",
            "policies": ["anti-affinity"],
            "members": [],
            "metadata": {}
        }
   ]
}

{
    "server_groups": [
        {
            "id": "%(id)s",
            "name": "test",
            "policies": ["anti-affinity"],
            "members": [],
            "metadata": {}
        }
    ]
}

Fix an indentation in server group api samples template
Fix an indentation in server group api samples template

This fixes an indentation mistake in the api sample template of server group api.

Change-Id: Ic6270f7ba8e7e0dea5d71ef64f01665ab3010a26
