Spec says `name` is required for Link Objects, but example does not have it set

[Simon-Laux]

this is basically the same thing as #647.

The example does not follow the spec. In the spec the name field is required.
spec: https://spec.open-rpc.org/#link-object
example: link-example-openrpc.json

"links": {
      "UserRepositories": {
        "description": "Get the repositories by owner.",
        "summary": "Get the repos by owner",
        "server":{
          "name": "Other Server Name",
          "description": "Use other server instead",
          "url": "http://localhost:9210"
        },
        "method": "get_repositories_by_owner",
        "params": {
          "username": "${result.username}"
        }
      },
      "UserRepository": {
        "method": "getRepository",
        "params": {
          "username": "${result.owner.username}",
          "slug": "${result.slug}"
        }
      },
      "RepositoryPullRequests": {
        "method": "getPullRequestsByRepository",
        "params": {
          "username": "${result.owner.username}",
          "slug": "${result.slug}"
        }
      },
      "PullRequestMerge": {
        "method": "mergePullRequest",
        "params": {
          "username": "${result.author.username}",
          "slug": "${result.repository.slug}",
          "pid": "${result.id}"
        }
      }
    },