Fix "sesssion" typo

Alvaro Herrera <alvherre@alvh.no-ip.org>

Commit: 17f5831c8150349d22da2e88820b1be3d734315d
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Date: 2015-09-28T22:13:42Z
Releases: 9.6.0
Fix "sesssion" typo

It was introduced alongside replication origins, by commit
5aa2350426c, so backpatch to 9.5.

Pointed out by Fujii Masao

Files