fix: 修复BoardManager末尾字面量\\n编译错误

src/main/java/com/github/zly2006/carpetslsaddition/util/BoardManager.java

@@ -109,4 +109,4 @@ public final class BoardManager {
         player.connection.send(new net.minecraft.network.protocol.game.ClientboundSetDisplayObjectivePacket(
                 net.minecraft.world.scores.DisplaySlot.SIDEBAR, obj));
     }
-}\n
+}