Updated test comment per review

Author: lonnieezell

tests/Authentication/Filters/PermissionFilterTest.php

@@ -75,7 +75,7 @@ public function testFilterIncorrectGroupWithPrevious(): void
             ->withSession(['_ci_previous_url' => site_url('open-route')])
             ->get('protected-route');
 
-        // Should redirect to home page since previous_url is not set
+        // Should redirect to the previous url (open-route)
         $result->assertRedirectTo(site_url('open-route'));
 
         $result->assertSessionHas('error');