Update author-prefixes-and-registration.md

Add `jks`, hat tip @ODDCODE.

Addresses #209

Author: petecooper

brand/author-prefixes-and-registration.md

@@ -286,6 +286,7 @@ Owners are identified by their Textpattern community forum usernames. Usernames
 * jgp: Rufnex
 * jjj: jascha
 * jk: Jeff_K
+* jks: [code365](https://forum.textpattern.com/profile.php?id=45643)
 * jmc: jufemaiz
 * jmd: jm
 * jmr: jmrhoades