added a code listing for feature configuration and a version requirement in the introduction page

Author: rsill-neo4j

modules/ROOT/pages/directives/indexes-and-constraints.adoc

@@ -306,6 +306,25 @@ input VectorIndexInput {
 If the optional field `provider` is set, the type is used for a query by phrase, otherwise for a query by vector.
 Allowed values for the `provider` field are defined by the available link:https://neo4j.com/docs/cypher-manual/current/indexes/semantic-indexes/vector-indexes/[GenAI providers].
 
+Additionally, add the following feature configuration when you are using queries by phrase and the GenAI plugin:
+
+[source, graphql]
+----
+const neoSchema = new Neo4jGraphQL({
+    typeDefs,
+    driver,
+    features: {
+        vector: {
+            OpenAI: {
+                token: "my-open-ai-token",
+                model: "text-embedding-3-small",
+            },
+        },
+    },
+});
+----
+
+
 === Usage
 
 ==== Query by vector index

modules/ROOT/pages/index.adoc

@@ -69,7 +69,8 @@ Additionally, prerelease version numbers may have additional suffixes, for examp
 
 == Requirements
 
-. https://neo4j.com/[Neo4j Database] version 4.4 and newer with https://neo4j.com/docs/apoc/current/[APOC] plugin.
+. https://neo4j.com/[Neo4j Database] version 4.4 or newer with https://neo4j.com/docs/apoc/current/[APOC] plugin.
+. Neo4j version 5.15 or newer when you are using the xref:/directives/indexes-and-constraints.adoc#_vector_index_search[`@vector` directive].
 . https://nodejs.org/en/[Node.js] 16+.
 
 == Resources