[css-text-3] Clean up some wording. w3c#3461

Author: fantasai

css-text-3/Overview.bs

@@ -1175,10 +1175,9 @@ Characters and Letters</h3>
       </wpt>
 
       <p>For other values of 'white-space', <a>segment breaks</a> are <a>collapsible</a>.
-        As with spaces,
-        any collapsible <a>segment break</a> immediately following another collapsible <a>segment break</a>
+        Any collapsible <a>segment break</a> immediately following another collapsible <a>segment break</a>
         is removed.
-        Then the remaining <a>segment breaks</a> are
+        Then any remaining <a>segment break</a> is
         either transformed into a space (U+0020) or removed
         depending on the context before and after the break: