[css-sizing-4] Adjust cross-references.

Author: fantasai

css-sizing-3/Overview.bs

@@ -1256,9 +1256,9 @@ Intrinsic Contributions of Percentage-Sized Boxes</h4>
 Compressible Replaced Elements</h4>
 
 	The following elements can have their <a>min-content size</a> compressed
-	when their 'width'/'height' or 'max-width'/'max-height' is expressed with a percentage size.
-	See <a href="#replaced-percentage-min-contribution">percentage-sized replaced element rule</a>
-	in [[#intrinsic-contribution]].
+	when their 'width'/'height' or 'max-width'/'max-height'
+	is expressed with a percentage size.
+	See <a href="#replaced-percentage-min-contribution">percentage-sized replaced element rule</a>, above.
 
 	* All <a>replaced elements</a> that aren't form controls.
 		See <a href="https://html.spec.whatwg.org/multipage/rendering.html#replaced-elements">HTML&sect;14.4</a>. [[!HTML]]
@@ -1301,7 +1301,8 @@ Changes</h2>
 			Changed the [=max-content size=] of replaced boxes
 			without an intrinsic size
 			to use their [=minimum size=] in place of ICB or 300px&times;150px
-			only when it is a <<length>>.
+			only when it is a <<length>>,
+			see [[#intrinsic-sizes]].
 			(<a href="https://github.com/w3c/csswg-drafts/issues/4217">Issue 4217</a>)
 
 		<li>