In the wiki page, the How to use says:
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>findbugs-maven-plugin</artifactId>
<version>2.5.2</version>
<configuration>
<findbugsXmlOutput>true</findbugsXmlOutput>
<findbugsXmlWithMessages>true</findbugsXmlWithMessages>
<xmlOutput>true</xmlOutput>
</configuration>
</plugin>

But it seems to me that findbugsXmlWithMessages does not exist anymore and should be removed from the how to.
And from the help files too:
https://github.com/jenkinsci/findbugs-plugin/tree/master/plugin/src/main/webapp

And the version of the findbugs-maven-plugin could be upgraded in the how to and in the help files (to 3.0.0 and not 3.0.1 for French people).