Fixed the table of contents left navigation #50

#50

src/main/asciidoc/index.adoc

@@ -1,17 +1,19 @@
 = TestNG Documentation
 :sectnums:
-:toc:                                                               
+:toc:
+:doctype: article
+:example-caption!:
 :toclevels: 5
 :toc-title: Table Of Contents
 :experimental:                                                      
 :description: TestNG user documentation
 :keywords: TestNG
-:imagesdir: ./img                                                   
-:docinfodir: ./docinfos
+:imagesdir: ./img
+:docinfodir: ../../main/resources/docinfos
 :javadocs-base-url: https://javadoc.io/static/org.testng/testng/{version-label}
+:backend: html5
 :revnumber:
 
-
 include::welcome.adoc[]
 
 include::download.adoc[]