Descriptions for 'href' and 'rel' fields are missing

[raul-te]

The documentation auto-generation is not including the description for the href and rel fields, in the api_links nested schema. This is not a problem with tfplugindocs, as the problem happens earlier in the process:

$ terraform providers schema -json
...
              "api_links": {
                "type": [
                  "list",
                  [
                    "object",
                    {
                      "href": "string",
                      "rel": "string"
                    }
                  ]
                ],

This bug seems relevant.