Fixed comments for drawMethodsDectRedrawnLines function

src/test/java/dotsandboxes/DotsAndBoxesGridTest.java

@@ -47,12 +47,12 @@ public class DotsAndBoxesGridTest {
 
         // code to test that drawHorizontal throws an exception if the line was already drawn goes here
         assertThrows(IllegalStateException.class, () -> {
-            case2.drawHorizontal(0, 0, 1); // divide by zero throws an exception for int/int
+            case2.drawHorizontal(0, 0, 1);
         });
 
         // code to test that drawVertical throws an exception if the line was already drawn goes here
         assertThrows(IllegalStateException.class, () -> {
-            case2.drawVertical(0, 0, 0); // divide by zero throws an exception for int/int
+            case2.drawVertical(0, 0, 0); 
         });
 
     }