Add connections ad (#98)

Author: renetapopova

publish.yml

@@ -52,3 +52,10 @@ asciidoc:
     # attributes for doc links to other manuals in publish playbook
     neo4j-base-uri: ''
     neo4j-docs-base-uri: /docs
+    page-ad-overline-link: https://neo4j.com/connections/
+    page-ad-overline: 13 & 14 December 2023
+    page-ad-title: Neo4j Connections
+    page-ad-description: "Join us for a day of Generative AI and Knowledge Graphs: Unveiling the future of Knowledge Retrieval"
+    page-ad-link: https://neo4j.com/connections/
+    page-ad-underline-role: button
+    page-ad-underline: Save your spot