[css-images-3] Bikeshed fix

Author: xfq

css-images-3/Overview.bs

@@ -182,7 +182,7 @@ Image References: the ''url()'' notation {#url-notation}
 	An <dfn export for=CSS>ambiguous image URL</dfn> is
 	a <<url>> value that can be interpreted
 	as either an <<image>> or an element reference.
-	If an [=ambiguous image URL=] is a [[css-values-3#local-urls|fragment-only URL]],
+	If an [=ambiguous image URL=] is a [[CSS-VALUES-3#local-urls|fragment-only URL]],
 	then it must be treated as an element reference.
 	Otherwise, if the [=ambiguous image URL=] has a fragment
 	that references an element in the resource
@@ -1815,7 +1815,7 @@ Changes Since the <a href="https://www.w3.org/TR/2012/CR-css3-images-20120417/">
 		- Added the <css>flip</css> values
 		- <a href="https://github.com/w3c/csswg-drafts/issues/1206">Swapped to "mod then round" ordering.</a>
 	- Added the 'image-rendering' property.
-	- Moved the <<resolution>> type to [[css-values-3]].
+	- Moved the <<resolution>> type to [[CSS-VALUES-3]].
 	- Better defined the handling of invalid and partially-loaded images.
 	- Defined the general computed form of <<image>>.
 	- Defined concept and handling of URLs that are ambiguous between being images or element references.