Add relay list of kind 3 to NIP-24 (#795)

(as deprecated)

24.md

@@ -24,6 +24,17 @@ These are fields that should be ignored or removed when found in the wild:
   - `displayName`: use `display_name` instead.
   - `username`: use `name` instead.
 
+kind 3
+======
+
+These are extra fields not specified in NIP-02 that may be present in the stringified JSON of contacts events:
+
+### Deprecated fields
+
+These are fields that should be ignored or removed when found in the wild:
+
+  - `{<relay-url>: {"read": <true|false>, "write": <true|false>}, ...}`: an object of relays used by a user to read/write, but in favor of [NIP-65](65.md).
+
 tags
 ====