Modify the namespace to match the poggit requirements

Modify the namespace to match the poggit requirements

Author: 3zeroed

src/Anders/PlayerJoinSettings/Main.php

@@ -13,7 +13,7 @@
 
 declare(strict_types=1);                        
 
-namespace Anders;
+namespace Anders\PlayerJoinSettings;
 
 use pocketmine\utils\Config;
 use pocketmine\utils\TextFormat;