[css-ui-3] transition update

Author: frivoal

css-ui-3/transition-pr-2017-11.md

@@ -1,7 +1,7 @@
 (from [pr transitions](https://www.w3.org/Guide/transitions?profile=PR) )
 <!-- read that link to understand how to fill in the template -->
 
-# Transition request for PR: TITLE.
+# Transition request for PR: CSS-UI-3
 
 ## Document title, URIs, and estimated publication date