readme update

Author: semiherdogan

README.md

@@ -20,7 +20,7 @@ First create filter like below.
 php artisan make:filter UserFilter
 ```
 
-After creating the filter, add HasFilter trait into your eloquent model.
+After creating the filter, add `HasFilter` trait into your eloquent model.
 
 ```php
 use \LaraToolbox\EloquentFilters\HasFilter;