fix cs

Author: dannyvankooten

tests/MC4WP_Form_Tags_Test.php

@@ -13,7 +13,7 @@ public function test_replace_in_html(): void
         $t = new MC4WP_Form_Tags();
         $t->register();
 
-        $p = new WP_Post;
+        $p = new WP_Post();
         $p->ID = 1;
         global $post;
         $post = $p;