[commands] Fixed import in MenuCommand.js

src/commands/MenuCommand.js

@@ -24,7 +24,7 @@ import Bot from '../Bot.js';
 import Command from '../Command.js';
 import SoftConfig from '../config/SoftConfig.js';
 import Cache from '../utils/Cache.js';
-import StringUtils from '../utils/String';
+import StringUtils from '../utils/String.js';
 
 class MenuCommand extends Command {
     constructor() {