Add documentation for resource in media upload

- Media upload resource now documented.
- A little more alignment for some `@param` in API docs.

LOOK HERE: [Specific template file that made this giant diff is here.](https://github.com/ryanseys/google-api-nodejs-client/commit/0cc0ea82a4c860d81d9326b4cf43a48d2a454071#diff-4e39626c0972b15cb23cc82119750b4b)