fix: address comments about implementation of props for children and subNav

Author: Alexis

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

@@ -1616,36 +1616,17 @@ To use our self-serve portal API please see [Get self-serve portal link](https:/
 ```jsx
 import {PortalLink} from "@kinde-oss/kinde-auth-nextjs/components";
 
-<PortalLink></PortalLink>
-```
-
-### children
-
-When setting up your portal link, `children=""` must be set, as that will be what your link is called.
-
-
-```jsx
-import {PortalLink} from "@kinde-oss/kinde-auth-nextjs/components";
-
-<PortalLink children="Portal Link Name"></PortalLink>
+<PortalLink>Portal Link Name</PortalLink>
 ```
 ### subNav
 
 The  `subNav=""` property allows you to set the area of the portal you want the user to land on. By default, it will send users to their profile. 
 
 ```jsx
 import {PortalLink} from "@kinde-oss/kinde-auth-nextjs/components";
-/**
- * Valid subNav values are: 
- * profile
- * organization_details 
- * organization_payment_details
- * organization_plan_selection 
- * payment_details 
- * plan_details 
- * plan_selection
-*/
-<PortalLink subNav="organization_payment_details"></PortalLink>
+import { PortalPage } from "@kinde/js-utils";
+
+<PortalLink subNav={PortalPage.organizationPaymentDetails}></PortalLink>
 ```
 
 ### returnUrl