Incorrect site documentation

The example given on the page below does not work
https://maven.apache.org/plugins-archives/maven-archetype-plugin-1.0-alpha-7/examples/simple.html

I found the correct syntax at:
http://stackoverflow.com/questions/9181683/maven-3-failed-to-execute-goal-org-apache-maven-pluginsmaven-archetype-plugin

Also I noticed that the version displayed on the breadcrumb bar is "Last Published: 08 Feb 2008 | Version: 1.0-alpha-7" which is quite old and way behind the latest release 2.4