[css-anchor-position-1][editorial] Fix links

Author: fantasai

css-anchor-position-1/Overview.bs

@@ -2,7 +2,7 @@
 Title: CSS Anchor Positioning Module Level 1
 Shortname: css-anchor-position
 Level: 1
-Status: ED
+Status: WD
 Group: csswg
 Work Status: refining
 ED: https://un5n798jx6qx6j0rmf2verhh.julianrbryant.com/css-anchor-position-1/
@@ -31,6 +31,7 @@ spec:css-cascade-5; type:dfn; text:property
 spec:dom; type:dfn; text:shadow tree
 spec:css-align-3; type:value; text:center
 spec:css-values-5; type:dfn; text:invalid at computed-value time
+spec:css-env-1; type:function; text:env()
 </pre>
 
 <pre class=anchors>