Fix description of release.

hadoop-project/src/site/markdown/index.md.vm

@@ -15,8 +15,8 @@
 Apache Hadoop ${project.version}
 ================================
 
-Apache Hadoop ${project.version} is a minor release in the 2.x.y release
-line, building upon the previous stable release 2.7.3.
+Apache Hadoop ${project.version} is a point release in the 2.x.y release
+line, building upon the previous stable release 2.8.4.
 
 Here is a short overview of the major features and improvements.