remove Interface-Suffix

Behavioral/Command/UndoableCommand.php

@@ -0,0 +1,12 @@
+<?php
+declare(strict_types=1);
+
+namespace DesignPatterns\Behavioral\Command;
+
+interface UndoableCommand extends Command
+{
+    /**
+     * This method is used to undo change made by command execution
+     */
+    public function undo();
+}