fix javadoc generation with maven-javadoc-plugin 3.0.0 by additionalparam with additionalOptions
<script src="http://cdn.jsdelivr.net/highlight.js/8.6/highlight.min.js"></script>
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<!-- init Highlight -->
- <additionalparam>--allow-script-in-comments</additionalparam>
+ <additionalOptions>--allow-script-in-comments</additionalOptions>
<footer><![CDATA[
<script type="text/javascript">
hljs.initHighlightingOnLoad();
