typing error in Test.scala corrected

src/test/scala/Test.scala

@@ -4,7 +4,7 @@ import org.scalatest.funsuite.AnyFunSuite
 class StackSpec extends AnyFunSuite:
 
     test("Strong type should have increased damage multiplicator") {
-        assert(Fire.typeEfficiency(Grass).fatcor == 2.0)
+        assert(Fire.typeEfficiency(Grass).factor == 2.0)
     }
 
     test("Weak type should have decreased damage multiplicator") {