[css-text-3][css-text-4] Add Hanifi Rohingya to Appendix D #9984

css-text-4/Overview.bs

@@ -12071,6 +12071,7 @@ Scripts and Spacing</h2>
  between their letters for either justification or 'letter-spacing'.
  The following [=Unicode scripts=] are included:
  Arabic,
+ Hanifi Rohingya,
  Mandaic,
  Mongolian,
  N’Ko,