feat: add reference to api and other documentation

Author: Alexis

src/content/docs/developer-tools/sdks/backend/nextjs-sdk.mdx

@@ -1608,7 +1608,10 @@ If the `orgCode` is not specified and the user belongs to multiple organizations
 
 ## Self Serve Portal
 
-To allow your users to be sent to the kinde portal, you can use the `PortalLink` component.
+To allow your users to be sent to the kinde portal, you can use the `PortalLink` component. 
+Check here for information on enabling [self-serve portal for Organizations](https://docs.kinde.com/build/set-up-options/self-serve-portal-for-orgs/).
+Check here for information on enabling [self-serve portal for users](https://docs.kinde.com/build/set-up-options/self-serve-portal-for-users/).
+To use our self-serve portal API please see [Get self-serve portal link](https://docs.kinde.com/kinde-apis/frontend/).
 
 ```jsx
 import {PortalLink} from "@kinde-oss/kinde-auth-nextjs/components";