[css-text] Fix link until Display is updated

Author: fantasai

css-text/Overview.bs

@@ -21,6 +21,9 @@ At Risk: the 'text-justify' property
 At Risk: the percentage values of 'word-spacing'
 At Risk: the 'hanging-punctuation' property
 Ignored Vars: letter-spacing
+</pre>
+<pre class=link-defaults>
+spec:css-display-3; type:property; text:display
 </pre>
 
   <style type="text/css">