[css-transitions-2] Preserving the old ID was intentional for when the specs get merged.

Author: dbaron

css-transitions-2/Overview.bs

@@ -20,7 +20,7 @@ Ignored Terms: translate, rotate, scale
 	Once the Level 1 specification is closer to complete, it will be merged
 	with the additions here into a complete level 2 specification.</p>
 
-<h2 id="transition-events">Transition Events</h2>
+<h2 id="transition-events"><span id="transition-events-">Transition Events</span></h2>
 
 <h3 id="transition-event-types">Types of <code>TransitionEvent</code></h3>