Event Handlers: added some whitespace.

src/main/java/dev/micle/loginprotection/events/OnPlayerJoinEventHandler.java

@@ -8,7 +8,10 @@ import net.minecraftforge.eventbus.api.SubscribeEvent;
 public class OnPlayerJoinEventHandler {
     @SubscribeEvent
     public void EntityJoinWorldEvent(PlayerEvent.PlayerLoggedInEvent event) {
-        if (!(event.getEntity() instanceof Player player)) { return; }
+        if (!(event.getEntity() instanceof Player player)) {
+            return;
+        }
+
         ProtectedPlayerManager.addPlayer(player.getUUID());
     }
 }

src/main/java/dev/micle/loginprotection/events/OnPlayerLeaveEventHandler.java

@@ -8,7 +8,10 @@ import net.minecraftforge.eventbus.api.SubscribeEvent;
 public class OnPlayerLeaveEventHandler {
     @SubscribeEvent
     public void PlayerLeaveEvent(PlayerEvent.PlayerLoggedOutEvent event) {
-        if (!(event.getEntity() instanceof Player player)) { return; }
+        if (!(event.getEntity() instanceof Player player)) {
+            return;
+        }
+
         ProtectedPlayerManager.removePlayer(player.getUUID());
     }
 }