fixing chapter IDs that result in incorrect generated HTML file names

git-svn-id: https://svn.apache.org/repos/asf/cayenne/main/trunk@1555493 13f79535-47bb-0310-9956-ffa450edef68
decreasing the size of 'code' tags and increasing that of 'programlisting'

git-svn-id: https://svn.apache.org/repos/asf/cayenne/main/trunk@1555494 13f79535-47bb-0310-9956-ffa450edef68