Update logger.go

logger.go

diff --git a/logger.go b/logger.go
index e4974bf..dd99759 100644
--- a/logger.go
+++ b/logger.go
@@ -8,7 +8,7 @@
 
 type Logger struct {
 	// The logs are `io.Copy`'d to this in a mutex. It's common to set this to a
-	// file, or leave it default which is `os.Stdout`. You can also set this to
+	// file, or leave it default which is `os.Stderr`. You can also set this to
 	// something more adventorous, such as logging to Kafka.
 	Out io.Writer
 	// Hooks for the logger instance. These allow firing events based on logging