GH-545 Change the placeholder from "{SENDER}" to "{PLAYER}". (#545)

Author: vLuckyyy

eternalcore-core/src/main/java/com/eternalcode/core/feature/spawn/SpawnCommand.java

@@ -100,7 +100,7 @@ void execute(Viewer sender, @Arg Player player) {
 
         this.noticeService.create()
             .notice(translation -> translation.spawn().spawnTeleportedBy())
-            .placeholder("{SENDER}", sender.getName())
+            .placeholder("{PLAYER}", sender.getName())
             .player(player.getUniqueId())
             .send();