make namespace prefixes case-sensitive, consistent with recent resolution on CSS2.1 counter names

Author: fantasai

css3-namespace/Overview.html

@@ -220,12 +220,12 @@ <h2 id=conformance><span class=secno>2. </span>Conformance</h2>
 
    <h3 id=terminology><span class=secno>2.1. </span>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. <a
-    href="#REC-XML-NAMES"
-    rel=biblioentry>[REC-XML-NAMES]<!--{{!REC-XML-NAMES}}--></a></p>
+   <p>Besides terms introduced by this specification, CSS Namespaces uses the
+    terminology defined in Namespaces in XML 1.0. <a href="#REC-XML-NAMES"
+    rel=biblioentry>[REC-XML-NAMES]<!--{{!REC-XML-NAMES}}--></a> 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>