[css-ui-4] Bikeshed fixes

Author: frivoal

css-ui-4/Overview.bs

@@ -92,6 +92,12 @@ spec:selectors-4; type:selector; text::disabled
 spec:css-color-4; type:property; text:color
 spec:selectors-4; type:selector; text::focus
 spec:selectors-4; type:selector; text::focus-visible
+spec:css-backgrounds-3; type:property; text:border-radius
+spec:css-backgrounds-3; type:property; text:border-color
+spec:css-backgrounds-3; type:property; text:border-top-color
+spec:css-backgrounds-3; type:property; text:border-right-color
+spec:css-backgrounds-3; type:property; text:border-bottom-color
+spec:css-backgrounds-3; type:property; text:border-left-color
 </pre>
 <pre class=anchors>
 urlPrefix: https://html.spec.whatwg.org/multipage/; spec:HTML
@@ -1952,7 +1958,7 @@ Exclusion from Hit-testing: the 'pointer-events' property</h3>
 
 	</dl>
 
-	''pointer-events: none'' does not inhibit [=sequential focus navigation=].
+	''pointer-events: none'' does not inhibit  [[HTML#sequential-focus-navigation|sequential focus navigation]].
 
 	Note: This ''pointer-events: none'' only excludes the element itself from [=hit-testing=],
 	not the whole subtree.