Please view the documentaion by starting the apache server and your favourite
web browser and point to this URL: http://localhost/manual

Accessing the HTML manual manually on the filesystem can be tricky, you will have
to do something like this first:

cd /usr/share/doc/apache-doc
for i in `find -name "*.html.en"`; do
    new_name=`echo $i | sed -e "s/.html.en/.html/g"`
    mv -f $i $new_name
done

lynx index.html