Add Override annotations where appropriate

By: md_5 <git@md-5.net>

paper-api/src/main/java/org/bukkit/entity/EnderDragonPart.java

@@ -6,6 +6,7 @@ import org.jetbrains.annotations.NotNull;
  * Represents an ender dragon part
  */
 public interface EnderDragonPart extends ComplexEntityPart, Damageable {
+    @Override
     @NotNull
     public EnderDragon getParent();
 }