[BUG]: Webhook does not set content_type

[magzim21]

Expected Behavior

resource "github_organization_webhook" "argocd" {
  # name = "argocd"

  configuration {
    url          = "https://argocd.${var.organization_domain}/api/webhook"
    content_type = "application/json" # BUG IS HERE
    insecure_ssl = false
  }

  active = true

  events = ["push"]
}

Actual Behavior

Github sends request with "application/x-www-form-urlencoded" header, but it shows application/json in UI.
Re-enabling application/json manually in UI fixes this.

Terraform Version

Terraform v1.9.5

• provider registry.terraform.io/integrations/github v6.4.0

Affected Resource(s)

github_organization_webhook

Terraform Configuration Files

No response

Steps to Reproduce

No response

Debug Output

No response

Panic Output

No response

Code of Conduct

• I agree to follow this project's Code of Conduct

[magzim21]

I realized that the expected value is json , but application/json does not throw a validation error and UI shows application/json misleadingly.
Need to add validation and clarify Provider doc page, please.