[css-text] Mention overflow-wrap:anywhere along with overflow-wrap:break-word

Author: frivoal

css-text-3/Overview.bs

@@ -1409,6 +1409,7 @@ Shaping Across Intra-word Breaks</h3>
   ''word-break: break-all'',
   ''line-break: anywhere'',
   ''overflow-wrap: break-word'',
+  ''overflow-wrap: anywhere'',
   or when <a>hyphenating</a>)
   the characters must still be shaped
   (their joining forms chosen)