* wip: Define ENR extension
* Add definition and usage
* Fix references anchor
* Typos
* Action feedback
* Small corrections
* Clarify that the 3 multiaddresses section
* Typo
Co-authored-by: Hanno Cornelius <68783915+jm-clius@users.noreply.github.com>
Co-authored-by: Hanno Cornelius <68783915+jm-clius@users.noreply.github.com>