tidy up the code

src/main/java/dotsandboxes/DotsAndBoxesGrid.java

@@ -30,6 +30,7 @@ import java.util.function.Consumer;
  * We number all lines and boxes by their top-left coordinate.
  *
  * In Java 14+, we might use a Record class for this, but we're using 11+ as an LTS version, so we don't have that yet.
+ * //code adapted from Chatgpt
  */
 public class DotsAndBoxesGrid {
 

src/test/java/dotsandboxes/DotsAndBoxesGridTest.java

@@ -6,7 +6,7 @@ import static org.junit.jupiter.api.Assumptions.*;
 
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
-
+//code adapted from Chatgpt
 public class DotsAndBoxesGridTest {
     /*
      * Because Test classes are classes, they can have fields, and can have static fields.