Wiki editor request

I was in the postgres slack channel and someone suggested that I add https://www.vividcortex.com/blog/postgres-explain-explained to https://wiki.postgresql.org/wiki/Using_EXPLAIN. I created an account, but don't have editing privileges. :-) it's a blog featuring slides from a conference presentation by Baron Schwartz. i guess you could just do a link to the slides. whatever works. 

Thanks,

Elan