[css-text-decor-3] bikeshed fixes

Author: tabatkins

css-text-decor-3/Overview.bs

@@ -22,6 +22,8 @@ Use <i> Autolinks: yes
 
 <pre class="link-defaults">
 spec:css-break-3; type:dfn; text:fragment
+spec:css-display-3; type:property; text:display
+spec:css-color-4; type:value; text:currentcolor
 </pre>
 
 <h2 id="intro">