Slightly improved formatting

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1643679 13f79535-47bb-0310-9956-ffa450edef68
updated documentation for IT custom toolchain directory

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1643690 13f79535-47bb-0310-9956-ffa450edef68