[css-fonts-5] split security & privacy as required by new wide review

Author: svgeesus

css-fonts-5/Overview.bs

@@ -684,11 +684,13 @@ Color Font Support</h2>
 -->
 
 
-<h2 id="priv-sec">
-Security and Privacy Considerations
-</h2>
+<h2 id="security">Security Considerations</h2>
+
+No new security considerations have been reported on this specification.
+
+<h2 id="privacy">Privacy Considerations</h2>
 
-No new security or privacy considerations have been raised on this specification.
+No new privacy considerations have been reported on this specification.
 
 
 <h2 id="acknowledgments">