(doc) fix typo in mqtt vhost section

Duske · michaelklishin · commit f86d82c95f1e · 2018-06-21T02:19:54.000+03:00
(cherry picked from commit 28f14e0)
diff --git a/docs/rabbitmq.conf.example b/docs/rabbitmq.conf.example
@@ -605,7 +605,7 @@
 ##
 # mqtt.allow_anonymous = true
 
-## If you have multiple chosts, specify the one to which the
+## If you have multiple vhosts, specify the one to which the
 ## adapter connects.
 ##
 # mqtt.vhost = /
