Make Mod Menu class final

src/main/java/me/lortseam/uglyscoreboardfix/modmenu/ModMenuIntegration.java

@@ -4,7 +4,7 @@ import io.github.prospector.modmenu.api.ConfigScreenFactory;
 import io.github.prospector.modmenu.api.ModMenuApi;
 import me.lortseam.uglyscoreboardfix.UglyScoreboardFix;
 
-public class ModMenuIntegration implements ModMenuApi {
+public final class ModMenuIntegration implements ModMenuApi {
 
     @Override
     public ConfigScreenFactory<?> getModConfigScreenFactory() {