Fix error messages

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

Commit: 61639816b870347677e6e6945604e0d9da1837ca
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Date: 2019-05-08T17:20:16Z
Releases: 12.0
Fix error messages

Some messages related to foreign servers were reporting the server name
without quotes, or not at all; our style is to have all names be quoted,
and the server name already appears quoted in a few other messages, so
just add quotes and make them all consistent.

Remove an extra "s" in other messages (typos introduced by myself in
f56f8f8da6af).

Files