Unify the resource folder for HighlightItemsTest class

DEVSIX-4836

Author: Kate Ivanova

kernel/src/test/java/com/itextpdf/kernel/pdf/canvas/parser/HighlightItemsTest.java

@@ -72,7 +72,7 @@ This file is part of the iText (R) project.
 @Category(IntegrationTest.class)
 public class HighlightItemsTest extends ExtendedITextTest {
 
-    private static final String sourceFolder = "./src/test/resources/com/itextpdf/kernel/parser/HighlightItemsTest/";
+    private static final String sourceFolder = "./src/test/resources/com/itextpdf/kernel/pdf/canvas/parser/HighlightItemsTest/";
     private static final String outputPath = "./target/test/com/itextpdf/kernel/parser/HighlightItemsTest/";
 
     @Before