[css-pseudo-4] update <wpt> for #highlight-painting (w3c#5921)

Author: delan

css-pseudo-4/Overview.bs

@@ -753,7 +753,9 @@ Painting the Highlight</h3>
     css/css-pseudo/active-selection-014.html
     css/css-pseudo/active-selection-041.html
     css/css-pseudo/active-selection-045.html
-    css/css-pseudo/highlight-painting-order.html
+    css/css-pseudo/highlight-painting-001.html
+    css/css-pseudo/highlight-painting-002.html
+    css/css-pseudo/highlight-painting-003.html
     </wpt>
 
 <h4 id="highlight-backgrounds">