Tank crush damage tweaks

core/src/mindustry/world/blocks/defense/Wall.java

@@ -36,6 +36,7 @@ public class Wall extends Block{
         buildCostMultiplier = 6f;
         canOverdrive = false;
         drawDisabled = false;
+        crushDamageMultiplier = 5f;
 
         //it's a wall of course it's supported everywhere
         envEnabled = Env.any;