Update attributes for 5-preview (#50)

Author: recrwplay

antora.yml

@@ -1,13 +1,10 @@
 name: http-api
 title: HTTP API
-version: 'dev'
-display_version: 'dev-preview'
+version: '5-preview'
 start_page: ROOT:index.adoc
 nav:
 - modules/ROOT/content-nav.adoc
 asciidoc:
   attributes:
     page-origin-private: false
-    neo4j-version: '5.0'
-    neo4j-version-exact: '5.0.0'
-    neo4j-buildnumber: '5.0'
+    neo4j-version: '5'