Adjust spawn location coordinates for target blocks

Modified the spawnable target block location by adding 1 to the Y-coordinate. This change ensures that entities spawn above the target block, preventing them from spawning inside it or in obstructed areas.

src/main/java/com/alttd/custommobs/utility/SpawnableTargetBlock.java

@@ -16,7 +16,7 @@ public class SpawnableTargetBlock {
         while (iter.hasNext()) {
             Block block = iter.next();
             if (isSpawnable(block)) {
-                return Optional.of(block.getLocation());
+                return Optional.of(block.getLocation().add(0, 1, 0));
             }
         }
         return Optional.empty();