[css-ui-4] Make bikeshed happy about cross-links

Author: frivoal

css-ui-4/Overview.bs

@@ -89,6 +89,7 @@ spec:css-overflow-4; type:property; text:text-overflow
 spec:selectors-4; type:selector; text::enabled
 spec:selectors-4; type:selector; text::disabled
 spec:css-color-4; type:property; text:color
+spec:selectors-4; type:selector; text::focus
 </pre>
 
 <style>
@@ -499,7 +500,7 @@ to determine the size of the element.
 
 The 'resize' property applies to elements
 whose computed 'overflow' value
-is something other than ''visible''.
+is something other than ''overflow/visible''.
 UAs may also apply it,
 regardless of the value of the 'overflow' property,
 to: