Mentioning new config option as per Taylor request

https://github.com/laravel/framework/pull/7173#issuecomment-71988006

config/app.php

@@ -91,7 +91,7 @@ return [
 	| the box, Laravel uses the Monolog PHP logging library. This gives
 	| you a variety of powerful log handlers / formatters to utilize.
 	|
-	| Available Settings: "single", "daily", "syslog"
+	| Available Settings: "single", "daily", "syslog", "errorlog"
 	|
 	*/