[css-scroll-snap] Refer to the intended example explicitly, since things have moved around.

Author: tabatkins

css-scroll-snap/Overview.bs

@@ -554,7 +554,7 @@ Snapping Boxes that Overflow the Scrollport</h4>
     for certain scroll operations (e.g. explicit paging).
 
     <div class="example">
-        For example, take the third code fragment in the previous example,
+        For example, take the first example in [[#examples]],
         which had a photo as the area.
         The author wants mandatory snapping from item to item,
         but if the item happens to be larger than your viewport,