MPXDOC-132 : A link starting with https wasn't considered as an external link.

git-svn-id: https://svn.apache.org/repos/asf/maven/maven-1/plugins/trunk@153863 13f79535-47bb-0310-9956-ffa450edef68

xdoc/src/plugin-resources/site.jsl

@@ -305,7 +305,7 @@
                   <doc:escapeNameToken value="${href}"/>
                 </x:attribute>
               </j:when>
-              <j:when test="${href.startsWith('http://')}">
+              <j:when test="${href.startsWith('http://') or href.startsWith('https://')}">
                 <x:attribute name="href">${href}</x:attribute>
                 <x:attribute name="class">externalLink</x:attribute>
                 <x:attribute name="title">External Link</x:attribute>