Use the correct class name. Keep things the consistent. (ChilliCream#66)

Author: JeffOkaki

docs/7-subscriptions.md

@@ -181,7 +181,7 @@ Now that we have the mutation in to register new attendees, let us move on to ad
     }
     ```
 
-1. Next we add the payload type for the `checkInAttendee` Mutation:
+1. Next we add the payload type for the `CheckInAttendeePayload` Mutation:
 
     ```csharp
     using System.Threading;
@@ -854,4 +854,4 @@ The `onSessionScheduled` was quite simple since we did not subscribe to a dynami
 
 In this session, we have learned how we can use GraphQL subscription to provide real-time events. GraphQL makes it easy to work with real-time data since we can specify what data we want to receive when an event happens on our system.
 
-[**<< Session #6 - Adding complex filter capabilities**](6-adding-complex-filter-capabilities.md) | [**Session #8 - Testing the GraphQL server >>**](8-testing-the-graphql-server.md) 
+[**<< Session #6 - Adding complex filter capabilities**](6-adding-complex-filter-capabilities.md) | [**Session #8 - Testing the GraphQL server >>**](8-testing-the-graphql-server.md)