minor update to build instructions
minor update to build instructions

ehmkah/asciidoctor-intellij-plugin,asciidoctor/asciidoctor-intellij-plugin,harrol/asciidoctor-intellij-plugin,ehmkah/asciidoctor-intellij-plugin,asciidoctor/asciidoctor-intellij-plugin,asciidoctor/asciidoctor-intellij-plugin,ehmkah/asciidoctor-intellij-plugin,McPringle/asciidoctor-intellij-plugin,bodiam/asciidoctor-intellij-plugin,asciidoctor/asciidoctor-intellij-plugin,yole/asciidoctor-intellij-plugin,yole/asciidoctor-intellij-plugin,asciidoctor/asciidoctor-intellij-plugin,yole/asciidoctor-intellij-plugin