docs-util: fixes to OAS generator + generate OAS (#10867)

www/utils/generated/oas-output/operations/admin/post_auth_[actor_type]_[auth_provider].ts

@@ -26,7 +26,12 @@
  *       schema:
  *         type: object
  *         title: input
- *         description: The input data necessary for authentication. For example, for email-pass authentication, pass `email` and `password` properties.
+ *         description: >
+ *           The input data necessary for authentication. 
+ * 
+ *           For example, for email-pass authentication, pass `email` and `password` properties. 
+ * 
+ *           For the Google and GitHub authentication providers, you can pass `callback_url` to indicate the URL in the frontend that the user should be redirected to after completing their authentication. This will override the provider's `callbackUrl` configurations in `medusa-config.ts`.
  * x-codeSamples:
  *   - lang: Shell
  *     label: EmailPass Provider