Update comments on how-to-use Sidekiq.yml

config/sidekiq.yml

 #
-# IMPORTANT: # NEVER USE "localhost". Instead, define the full hostname
+# IMPORTANT:
+# If you plan to run workers on different machines, use the full hostname,
+# instead of just "localhost". And remember to use the exactly same configs
+# on all of the machines, including database's configs and
+# environment type (development, test, production).
 #
 
 development: &development
-  host: portalmecdev1.c3sl.ufpr.br
+  host: localhost
   port: 6379
 
 test: