[css-nav-1] Minor linking edit

Author: Jihye Hong

css-nav-1/Overview.bs

@@ -1460,7 +1460,7 @@ or of its nearest [=scroll container=] ancestor if it isn't.
 
         Note: The [=scroll container=] may be scrolled as a side effect of focusing
         an element which was previously not in view,
-        but it will not be scrolled directly.
+        but it will not <a>be directionally scrolled</a>.
 
         Note: If the ''spatial-navigation-action/focus'' value is given to 'spatial-navigation-action',
         <a event>navnotarget</a> event occurs when there isn’t any visible candidate in the given direction within the viewport of
@@ -1611,7 +1611,7 @@ Issue(w3c/csswg-drafts#2323): [[CSSOM-VIEW-1]] should probably define
 how to perform a scroll in a given direction without an explicit position.
 Until then, we roll our own.
 
-To <dfn lt="directionally scroll an element | directionally scroll the element">directionally scroll an element</dfn> <var>e</var> in direction <var>dir</var>:
+To <dfn lt="directionally scroll an element | directionally scroll the element | be directionally scrolled">directionally scroll an element</dfn> <var>e</var> in direction <var>dir</var>:
 
 1. Let <var>d</var> be a User Agent defined distance.
 2. Let <var>x</var> be <var>e</var>’s current scroll position on the x axis.