[Typescript] request options autocomplete not working

After PR #399 that fixed route completion, options are not triggered anymore..

```js
const octokit = new Octokit({ auth: `personal-access-token123` });

const response = await octokit.request(
    "GET /orgs/{org}/repos",
    {
          // the options key (e.g. 'org') has no completion anymore
          org: "octokit",
    }
);
```