[css-scroll-anchoring][editorial] Improve/export the dfn for 'anchor …

…priority candidate'.

css-scroll-anchoring-1/Overview.bs

@@ -119,14 +119,16 @@ following criteria:
   * |C| is not in an <a>excluded subtree</a>
   * None of the ancestors of |C| up to |S| are in an <a>excluded subtree</a>
 
-Some elements are considered to be <dfn
-id="anchor-priority-candidates">priority candidates</dfn> for anchor selection:
-  1. The [=DOM anchor=] of the [=focused area of the document=], if such an anchor
-      is text editable ([=editable=], [=editing host=], [=mutable=] <{textarea}>, or
-      [=mutable=] <{input}> with a type that allows text entry).
-  2. An element containing the current [=active match=] of the
-      find-in-page user-agent algorithm. If the match spans multiple elements, then
-      consider only the first such element.
+Some elements are considered to be 
+<dfn id="anchor-priority-candidates" export lt="anchor priority candidate" local-lt="priority candidate">anchor priority candidates</dfn> 
+for anchor selection:
+
+1. The [=DOM anchor=] of the [=focused area of the document=], if such an anchor
+	is text editable ([=editable=], [=editing host=], [=mutable=] <{textarea}>, or
+	[=mutable=] <{input}> with a type that allows text entry).
+2. An element containing the current [=active match=] of the
+	find-in-page user-agent algorithm. If the match spans multiple elements, then
+	consider only the first such element.
 
 Note that if the <a>priority candidate</a> is a non-<a>atomic inline</a>
 element, then instead consider its nearest ancestor element that is not a