[css-contain-2][meta] Fix link and add WPT tests

Author: tabatkins

css-contain-2/Overview.bs

@@ -1207,6 +1207,10 @@ Suppressing An Element's Contents Entirely: the 'content-visibility' property {#
 		and do not respond to hit-testing
 		(as if they had ''pointer-events: none'').
 
+		<wpt>
+		content-visibility/content-visibility-080.html
+		</wpt>
+
 		The user agent <em>should</em> additionally avoid as much layout/rendering work as possible
 		for [=skipped contents=];
 		the combination of heavy [=containment=]
@@ -1216,6 +1220,10 @@ Suppressing An Element's Contents Entirely: the 'content-visibility' property {#
 		the user-agent should retain the previously computed layout state if possible,
 		to allow the [=skipped contents=] to be displayed quickly at a later moment.
 
+		<wpt>
+		content-visibility/content-visibility-081.html
+		</wpt>
+
 		<div class=note>
 			If an element has a value other than ''content-visibility: visible'',
 			then the following properties hold:
@@ -1509,7 +1517,7 @@ Restrictions and Clarifications {#cv-notes}
 
 	Note: Thus, unlike the previous point,
 	the element <em>will</em> be correctly sized and aligned in the viewport.
-	This is consistent with the order of the steps for the {{HTMLOrSVGElement/focus()}} method.
+	This is consistent with the order of the steps for the {{Window/focus()}} method.
 
 7. If an <{iframe}> [=skips its contents=]
 	or is part of an element's [=skipped contents=],