wrong description for "resource_limit" in limits API

"resource_limit" is described as array type in the table, but the example below shows it's an integer.

```
{
    "links": {
        "self": "http://10.3.150.25/identity/v3/limits",
        "previous": null,
        "next": null
    },
    "limits": [
        {
            "resource_name": "volume",
            "region_id": null,
            "links": {
                "self": "http://10.3.150.25/identity/v3/limits/25a04c7a065c430590881c646cdcdd58"
            },
            "service_id": "9408080f1970482aa0e38bc2d4ea34b7",
            "project_id": "3a705b9f56bb439381b43c4fe59dccce",
            "id": "25a04c7a065c430590881c646cdcdd58",
            "resource_limit": 11
        },
        {
            "resource_name": "snapshot",
            "region_id": "RegionOne",
            "links": {
                "self": "http://10.3.150.25/identity/v3/limits/3229b3849f584faea483d6851f7aab05"
            },
            "service_id": "9408080f1970482aa0e38bc2d4ea34b7",
            "project_id": "3a705b9f56bb439381b43c4fe59dccce",
            "id": "3229b3849f584faea483d6851f7aab05",
            "resource_limit": 5
        }
    ]
}
```