Modify the type of applied element for spatial-navigation-action

Author: Jihye Hong

css-nav-1/Overview.bs

@@ -1257,7 +1257,7 @@ Defining the spatial navigation behavior : the 'spatial-navigation-action' prope
 Name: spatial-navigation-action
 Value: auto | focus | scroll
 Initial: auto
-Applies to: <a>spatial navigation focus container</a>
+Applies to: <a>scroll container</a>
 Inherited: true
 </pre>