Update README.md

Author: tarampampam

README.md

@@ -123,7 +123,7 @@ Name            | Description
 
 #### Performance degradation
 
-...when `file` driver is set for your sessions. Please, use `redis` (or something similar) driver instead ([related issue](https://github.com/spiral/roadrunner-laravel/issues/23)).
+...when `file` driver is set for your sessions. Please, use `redis` (or something similar) driver instead ([related issue](https://github.com/spiral/roadrunner-laravel/issues/23)). This package or/and RoadRunner has nothing to do with it, but since this is a fairly common issue - it is described here.
 
 #### Controller constructors