[DOXIA-405] avoid generating xhtml entire document on a single line: adding newline on every division block will improve legibility (without adding too much size to the output)

git-svn-id: https://svn.apache.org/repos/asf/maven/doxia/doxia/trunk@1410919 13f79535-47bb-0310-9956-ffa450edef68
7 files changed