[ZT] OIDC SaaS app launcher URL (cloudflare#25243)

* app launcher url

* Update src/content/docs/cloudflare-one/applications/configure-apps/saas-apps/generic-oidc-saas.mdx

Co-authored-by: Maddy <[email protected]>

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Co-authored-by: kennyj42 <[email protected]>
Co-authored-by: Maddy <[email protected]>

Author: 3 people

src/content/docs/cloudflare-one/applications/configure-apps/saas-apps/generic-oidc-saas.mdx

@@ -58,7 +58,7 @@ Some SaaS applications provide the Redirect URL after you [configure the SSO pro
 
 13. Select **Next**.
 
-14. (Optional) Configure [App Launcher settings](/cloudflare-one/applications/app-launcher/) for the application.
+14. Configure [App Launcher settings](/cloudflare-one/applications/app-launcher/) for the application. If **Show application in App Launcher** is enabled, then you must enter an **App Launcher URL**. The App Launcher URL is provided by the SaaS application. It may match the base URL portion of **Redirect URL** (`https://<INSTANCE-NAME>.example-app.com`) but could be a different value.
 
 15. <Render file="access/access-block-page" product="cloudflare-one" />