Apply suggestions from code review

Co-authored-by: Richard Sill <[email protected]>

Author: angrykoala

modules/ROOT/pages/subscriptions/customize-cdc.adoc

@@ -4,7 +4,7 @@
 :description: This page describes how to customize the behavior of subscriptions.
 
 GraphQL subscriptions to Neo4j use [Change Data Capture](https://neo4j.com/docs/cdc/current/) (CDC).
-It's behavior can be configured by passing an instance of `Neo4jGraphQLSubscriptionsCDCEngine`.
+Its behavior can be configured by passing an instance of `Neo4jGraphQLSubscriptionsCDCEngine`.
 
 == Neo4jGraphQLSubscriptionsCDCEngine
 

modules/ROOT/pages/subscriptions/index.adoc

@@ -9,4 +9,3 @@ This section covers:
 * xref:subscriptions/getting-started.adoc[Getting started] - How to get started with subscriptions by setting up a basic example.
 * xref:subscriptions/events.adoc[Events] - How to trigger events when using `@neo4j/graphql`.
 * xref:subscriptions/filtering.adoc[Filtering] - How to apply filters to subscriptions.
-* xref:subscriptions/engines.adoc[Subscriptions engines] - How to set up a GraphQL subscription along with a `@neo4j/graphql` server.