Required yaml migration for 3.3.0 helm chart 1.0.0 -- where can I help add docs for this?

[Syntaf]

Hey all, upgrading an old project that was still using 3.1.0.

The upgrade to to 3.2.0 went fine, no issues, but the upgrade to 3.3.0 failed with the following error message:

make deploy
helm upgrade -n my-release -f secrets.yaml my-release k8s/my-release
coalesce.go:220: warning: cannot overwrite table with non table for my-release.nginx-ingress.controller.ingressClass (map[create:true name:nginx setAsDefaultIngress:false])
coalesce.go:220: warning: cannot overwrite table with non table for my-release.nginx-ingress.controller.ingressClass (map[create:true name:nginx setAsDefaultIngress:false])
coalesce.go:220: warning: cannot overwrite table with non table for my-release.nginx-ingress.controller.ingressClass (map[create:true name:nginx setAsDefaultIngress:false])
Error: UPGRADE FAILED: values don't meet the specifications of the schema(s) in the following chart(s):
nginx-ingress:
- controller.ingressClass: Invalid type. Expected: object, given: string

After digging around the release I found that PR #4333 changed the schema of ingressClass from a string to an object, meaning anyone trying to upgrade to this release will have to modify their yaml from:

nginx-ingress:
  controller:
    ingressClass: "my-release-nginx"

to

nginx-ingress:
  controller:
    ingressClass:
      name: "my-release-nginx"

Knowing this ahead of time would have saved me a lot of time, but now that I know this I want to see if I can help contribute to the documentation and help the next person that runs into this.

Is this release page managed by this repository? Or another? I'd be happy w/ opening up a PR to add this info somewhere if anyone can help direct me to the right spot.