Webhook headers incorrect type

[kellpossible]

https://github.com/bigcommerce/api-specs/blob/main/reference/webhooks.v3.yml#L3032

        headers:
          type: object
          description: 'Headers used to validate that webhooks are active. You can pass in any number of custom headers to validate webhooks are being returned. '
          nullable: true
          properties:
            custom:
              type: string

Should probably be:

        headers:
          type: object
          description: 'Headers used to validate that webhooks are active. You can pass in any number of custom headers to validate webhooks are being returned. '
          nullable: true
          additionalProperties:
             type: string

[slsriehl]

Hi @kellpossible -- sorry for the delay in responding to this. The spec and the examples were updated by @kzhang-dsg in the following PRs:

• (no ticket): [external] Webhooks, fix header field to indicate support for custom key-value pairs #1233
• (no ticket): [external] Webhooks, create webhook_Put schema without required fields #1241