reword XML-NAMES reference, issues-1#6

Author: fantasai

css3-namespace/Overview.src.html

@@ -137,11 +137,12 @@ <h2 id="conformance">Conformance</h2>
 
   <h3 id="terminology">Terminology</h3>
 
-  <p>Besides terms introduced by this specification, the terminology used is
-    that of Namespaces in XML 1.0. However, the syntax defined here is not
-    restricted to representing XML element and attribute names and may represent
-    other kinds of namespaces as defined by the host language.
-    [[!REC-XML-NAMES]]</p>
+  <p>Besides terms introduced by this specification, CSS Namespaces uses the
+    terminology defined in Namespaces in XML 1.0. [[!REC-XML-NAMES]] However,
+    the syntax defined here is not restricted to representing XML element and
+    attribute names and may represent other kinds of namespaces as defined by
+    the host language.
+    </p>
 </div>
 
 <div>