Fix asciidoctor complaints: "ERROR: README.adoc: line 3: only book doctypes can contain level 0 sections"
Fix asciidoctor complaints: "ERROR: README.adoc: line 3: only book doctypes can contain level 0 sections"

droolsjbpm/optaplanner-website,oskopek/optaplanner-website,oskopek/optaplanner-website,droolsjbpm/optaplanner-website,oskopek/optaplanner-website,droolsjbpm/optaplanner-website