Fix the error about the Neo4j Helm chart and service account (neo4j#1609)

This is the copy of the PR neo4j#1590

Author: NataliaIvakina

modules/ROOT/pages/kubernetes/configuration.adoc

@@ -1199,7 +1199,7 @@ podSpec:
 [NOTE]
 ====
 The service account must already exist.
-The Neo4j Helm charts do not create or configure Service Accounts.
+In the case of clusters, the Neo4j Helm chart creates and configures the service account.
 ====
 
 [[configure-custom-image]]