Use 'fabric-api' mod ID in fabric.mod.json

[Poopooracoocoo]

Users may be confused when they see that it depends on fabric, not knowing that it's referring to the Fabric API.

Fabric API versions on 1.18.2 and above use the fabric-api ID. It still provides the fabric ID for compatibility, but it's a good idea to change the dependency to `fabric-api so users do not get confused.