[css-pseudo-4] Fix cross references

Author: fantasai

css-pseudo-4/Overview.bs

@@ -1385,11 +1385,11 @@ Security Considerations for Highlighting</h3>
 <h2 id="treelike">
 Tree-Abiding Pseudo-elements</h2>
 
-  <dfn export lt="tree-abiding|tree-abiding pseudo-element">Tree-abiding pseudo-elements</dfn> always fit within the box tree.
+  <dfn export local-lt="tree-abiding" id="tree-abiding">Tree-abiding pseudo-elements</dfn> always fit within the box tree.
   They <a lt="inheritance">inherit</a> any inheritable properties from their <a>originating element</a>;
   non-inheritable properties take their <a>initial values</a> as usual.
   [[CSS-CASCADE-4]]
-  A subset of these are the <dfn>fully styleable pseudo-elements</dfn>;
+  A subset of these are the <dfn export local-lt="fully styleable" id="fully-styleable">fully styleable pseudo-elements</dfn>;
   all properties that apply to a real element
   also apply to a [=fully styleable pseudo-element=].
 
@@ -1535,7 +1535,7 @@ List Markers: the ''::marker'' pseudo-element</h3>
   ISSUE: Interaction of ''::marker'' and ''::first-line'' is currently under discussion in <a href='https://github.com/w3c/csswg-drafts/issues/4506'>Issue 4506</a>.
 
   ''::marker'' is a [=tree-abiding pseudo-element=],
-  but is not [=element-backed=];
+  but is not [=fully styleable=];
   only a limited set of properties can be used on the ''::marker'' pseudo-element.
   This list is defined in [[css-lists-3#marker-properties]].