[css-text-3] Note that overflowing spaces wrap in the case of 'break-spaces'.

Author: fantasai

css-text-3/Overview.bs

@@ -773,7 +773,9 @@ Characters and Letters</h3>
              Note: Hanging the white space rather than collapsing it
              allows users to see the space when selecting or editing text.
           <li>If 'white-space' is set to ''break-spaces'',
-             hanging or collapsing the advance width of spaces at the end of the line is not allowed.
+             hanging or collapsing the advance width of spaces
+             at the end of the line is not allowed;
+             those that overflow must <a>wrap</a> to the next line.
         </ul>
 
     </ol>