Add missing dot to sentence in production.rb.tt [ci-skip]

Author: p8

railties/lib/rails/generators/rails/app/templates/config/environments/production.rb.tt

@@ -41,7 +41,7 @@ Rails.application.configure do
   config.log_tags = [ :request_id ]
   config.logger   = ActiveSupport::TaggedLogging.logger(STDOUT)
 
-  # Change to "debug" to log everything (including potentially personally-identifiable information!)
+  # Change to "debug" to log everything (including potentially personally-identifiable information!).
   config.log_level = ENV.fetch("RAILS_LOG_LEVEL", "info")
 
   # Prevent health checks from clogging up the logs.