typo...

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1610460 13f79535-47bb-0310-9956-ffa450edef68
fixed errors reported by Checkstyle

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1610462 13f79535-47bb-0310-9956-ffa450edef68