Confusing mistake (#71)

Author: Enough7

docs/1-creating-a-graphql-server-project.md

@@ -229,7 +229,7 @@ A mutation consists of three components, the **input**, the **payload** and the
 
 So, for our `addSpeaker` mutation, we create two types: `AddSpeakerInput` and `AddSpeakerPayload`.
 
-1. Add a class `AddSpeakerInput` to your project with the following code:
+1. Add a file `AddSpeakerInput.cs` to your project with the following code:
 
     ```csharp
     namespace ConferencePlanner.GraphQL
@@ -343,4 +343,4 @@ In this first session, you have learned how you can create a simple GraphQL proj
 You have leveraged Entity Framework to create your models and save those to the database.
 Together, ASP.NET Core, Entity Framework, and Hot Chocolate let you build a simple GraphQL server quickly.
 
-[**Session #2 - Controlling nullability >>**](2-controlling-nullability.md)
+[**Session #2 - Controlling nullability >>**](2-controlling-nullability.md)