Merge pull request #842 from Angristan/patch-2

Missing quotes

docs/Running-Mastodon/Production-guide.md

@@ -132,7 +132,7 @@ Fill in the important data, like host/port of the redis database, host/port/user
 
     rake secret
 
-To get a random string. If you are setting up on one single server (most likely), then REDIS_HOST is localhost and `DB_HOST` is `/var/run/postgresql`, `DB_USER` is `mastodon` and `DB_NAME` is `mastodon_production` while `DB_PASS` is empty because this setup will use the ident authentication method (system user "mastodon" maps to postgres user "mastodon").
+To get a random string. If you are setting up on one single server (most likely), then `REDIS_HOST` is localhost and `DB_HOST` is `/var/run/postgresql`, `DB_USER` is `mastodon` and `DB_NAME` is `mastodon_production` while `DB_PASS` is empty because this setup will use the ident authentication method (system user "mastodon" maps to postgres user "mastodon").
 
 ## Setup