Reformat the autogenerated goal parameters page to improve readibility.

The goal plugin:xdoc creates a table describing the parameters for a plugin. An example may be found here: http://mojo.codehaus.org/xmlbeans-maven-plugin/xmlbeans-mojo.html

In the example, notice that the nowrap on the type, expression and default-value columns causes the descriptions to be crammed into the right side of the page.

So rather than having these values in their own columns, position them in rows below the parameter as is done in the maven-model documentation for the project descriptor. This way the fields don't compete for space across the page:
http://maven.apache.org/maven2/maven-model/maven.html

What's more, the inclusion of hyperlinked xml at the top of the page describing the configuration section of the plugin would benefit the end user without manual effort of the plugin developer.