Fixes header at wrong level (#3711)

Author: benmccallum

COMMUNITY.md

@@ -18,7 +18,7 @@ Various libraries, packages, etc. that developers can add to their own project a
 
 - [AutoGuru.HotChocolate.PolymorphicIds](https://github.com/autoguru-au/hotchocolate-polymorphic-ids) - Polymorphic Relay IDs for HotChocolate
 
-## Types
+### Types
 
 - [HotChocolate.Types.NodaTime](https://github.com/shoooe/hotchocolate-nodatime) - Adds support for [NodaTime](https://github.com/nodatime/nodatime) types in Hot Chocolate.