MSITE-847: Corrected link to prerequisite maven version.

diff --git a/src/site/apt/index.apt.vm b/src/site/apt/index.apt.vm
index 748b681..d93658b 100644
--- a/src/site/apt/index.apt.vm
+++ b/src/site/apt/index.apt.vm
@@ -32,7 +32,7 @@
  The Site Plugin is used to generate a site for the project. The generated site also includes the project's reports
  that were configured in the POM.
 
- This is the site for <<version 3>> of the maven-site-plugin. It requires at least Maven ${prerequisiteMavenVersion} to run. If you
+ This is the site for <<version 3>> of the maven-site-plugin. It requires at least Maven ${project.prerequisites.maven} to run. If you
  are looking for <<version 2>> you can find it {{{/plugins/maven-site-plugin-2.x/index.html}here}}.
 
  Please read the {{{./migrate.html}migration guide}} if you want to upgrade from a previous version.