* Extending webfinger response #2851
1. Added Logo
- rel: avatar as there wasn't any appropriate value in [Link relations registry](https://www.iana.org/assignments/link-relations/)
- type: default value image/png or else it is determined file type extension
2. Added Stream
- rel: stream as there wasn't appropriate value in [Link relations registry](https://www.iana.org/assignments/link-relations/)
- type: video/H264 based on [IANA media types](https://www.iana.org/assignments/media-types/media-types.xhtml#video)
Changes after review:
1. Updated the rel type for avatar based on webfinger rel.
2. Updated the rel type for stream link and href value that closely associates to it.
* adding period after comments
* updating typo
