Changing the content type of the activity verb example to be valid.

First reported by evan@protest.net here:

http://groups.google.com/group/activity-streams/t/a266d1b7ec7b23df

atomactivity.xml

@@ -23,7 +23,7 @@
     </author>
 
     <author fullname="Chris Messina" initials="C." surname="Messina">
-      <organization>Diso Project</organization>
+      <organization>Citizen Agency</organization>
     </author>
 
     <author fullname="Monica Keller" initials="M." surname="Keller">
@@ -214,7 +214,7 @@
 <id>tag:versioncentral.example.org,2009:/commit/1643245</id>
 <published>2009-06-01T12:54:00Z</published> 
 <title>Geraldine committed a change to yate</title>
-<content type="xhtml">Geraldine just committed a change to yate on VersionCentral</content>
+<content type="text/html">Geraldine just committed a change to yate on VersionCentral</content>
 <link rel="alternate" type="text/html"
       href="http://versioncentral.example.org/geraldine/yate/commit/1643245" /> 
 <activity:verb>http://activitystrea.ms/schema/1.0/post</activity:verb>