[cssom-1] fix document base url link #6463

Author: svgeesus

cssom-1/Overview.bs

@@ -20,6 +20,7 @@ Former Editor: Glenn Adams, Cox Communications, Inc. http://www.cox.com, gle
 Former Editor: Anne van Kesteren, Opera Software ASA http://www.opera.com, annevk@annevk.nl, https://annevankesteren.nl/
 !Legacy issues list: <a href="https://www.w3.org/Bugs/Public/buglist.cgi?product=CSS&amp;component=CSSOM&amp;resolution=---">Bugzilla</a>
 Abstract: CSSOM defines APIs (including generic parsing and serialization rules) for Media Queries, Selectors, and of course CSS itself.
+Repository: w3c/csswg-drafts
 Ignored Terms: EmptyString, group of selectors, list of css page selectors, -webkit-transform
 Ignored Vars: m1, m2, camel_cased_attribute, webkit_cased_attribute, dashed_attribute
 Include Can I Use Panels: true
@@ -35,8 +36,10 @@ urlPrefix: https://html.spec.whatwg.org/multipage/
         type: dfn
             text: html elements
             text: tree order
-            text: document base url
             text: content-type metadata; url: #content-type
+    urlPrefix: urls-and-fetching.html
+        type: dfn
+                text: document base url
     urlPrefix: rendering.html
         type: dfn
             text: being rendered