Update to latest asciidoctor-pdf

Author: Malcolm Sparks

Makefile

@@ -17,10 +17,9 @@ Site.pdf:	$(wildcard *.adoc) $(wildcard */*.adoc) identity-model.json user-model
 	-a mathematical-format=svg \
 	-a icons=font \
 	-a media=prepress \
-	-a pdf-style=juxt \
 	-a pdf-fontsdir=fonts \
-	-a pdf-style=juxt \
-	-a pdf-stylesdir=themes \
+	-a pdf-themesdir=themes \
+	-a pdf-theme=juxt \
 	-a sectnumlevels=3 \
 	-a sectnums=true \
 	-a title-page=true \

OpenIdAuthentication.adoc

@@ -291,7 +291,7 @@ our client application in Auth0.
 .Creating the OAuth 2.0 Client application in Auth0
 [[creating-a-client-application]]
 ====
-In Auth0 we located and selected the menu:Applications[Applications] menu item.
+In Auth0 we located and selected the `Applications/Applications` menu item.
 
 image::Auth0-Applications-Menuitem.png[width=20%]