[css-cascade-4] Fix links

Author: fantasai

css-cascade-5/Overview.bs

@@ -28,7 +28,6 @@ Informative Classes: ex
 </pre>
 
 <pre class=link-defaults>
-spec:css-syntax-3; type:dfn; text:css identifier
 spec:dom; type:dfn; text:shadow tree
 spec:css-color-4; type:property; text:color
 spec:css-values-3; type: value; text:ex
@@ -1021,7 +1020,7 @@ Cascade Sorting Order</h3>
 			take precedence over declarations the same [=importance=]
 			that are mapped via style rule.
 
-			See [[css-style-attr]].
+			See [[!CSSSTYLEATTR]].
 
 			Note: Non-CSS presentational hints (such as presentational markup)
 			are handled separately,

css-cascade-6/Overview.bs

@@ -19,7 +19,6 @@ Informative Classes: ex
 </pre>
 
 <pre class=link-defaults>
-spec:css-syntax-3; type:dfn; text:css identifier
 spec:dom; type:dfn; text:shadow tree
 spec:css-color-4; type:property; text:color
 spec:css-values-3; type: value; text:ex