Fix PHP code style issues

Author: AlizHarb

src/Policies/ActivityPolicy.php

@@ -35,7 +35,7 @@ protected function checkCustomAuthorization(User $user): ?bool
 
         if (is_string($customAuthorization) && class_exists($customAuthorization)) {
             $instance = app($customAuthorization);
-            
+
             if (is_callable($instance)) {
                 return $instance($user);
             }