Change PaginationAmount IntType registration (#2985)

Author: LandryDubus

website/src/docs/hotchocolate/api-reference/migrate-from-10-to-11.md

@@ -620,15 +620,17 @@ downstream schemas.
     services
         .AddGraphQLServer()
         .AddRemoteSchema("SomeSchema")
-        .AddType(new IntType())
-        .AddType(new IntType("PaginationAmount"))
+        .ConfigureSchema(x => 
+             x.AddType(new IntType())
+             .AddType(new IntType("PaginationAmount")))
         .AddMergedDocumentRewriter(
             d => (DocumentNode)new PagingAmountRewriter().Rewrite(d, null));
 
     services
         .AddGraphQL("SomeSchema")
-        .AddType(new IntType())
-        .AddType(new IntType("PaginationAmount"));
+        .ConfigureSchema(x => 
+             x.AddType(new IntType())
+             .AddType(new IntType("PaginationAmount")));
 ```
 
 **PagingAmountRewriter:**