v2.5.0: fixed rounding errors in upgrade stats for corrosion wand

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/items/wands/WandOfCorrosion.java

@@ -132,6 +132,6 @@ public class WandOfCorrosion extends Wand {
 
 	@Override
 	public String upgradeStat2(int level) {
-		return (1+.2f*level) + "x";
+		return Messages.decimalFormat("#.##x", 1+.2f*level);
 	}
 }