add xsd declaration

git-svn-id: https://svn.apache.org/repos/asf/maven/resources/trunk@1358288 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/src/site/site.xml b/src/site/site.xml
index 92f8042..2e4b813 100644
--- a/src/site/site.xml
+++ b/src/site/site.xml
@@ -19,7 +19,11 @@
   ~ under the License.
   -->
 
-<project>
+<project xmlns="http://maven.apache.org/DECORATION/1.0.0"
+  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/DECORATION/1.0.0 http://maven.apache.org/xsd/decoration-1.0.0.xsd"
+  name="Apache Maven Resource Bundles">
+
 
   <bannerLeft>
     <name>${project.name}</name>