Examples reference /catalogs endpoint

[jonhealy1]

In the json response examples a /catalogs link is advertised which is confusing. ie.

{
    "rel": "self",
    "type": "application/json",
    "href": "https://stac-api.example.com/catalogs/cool-data"
}

[m-mohr]

I think that's an example of where someone could have the catalogs that are listed by children - or this extension used /catalogs instead of /children in the past as endpoint name. But yes, I agree, this should be clarified.