Update index.yml

Author: csmulligan

articles/active-directory/external-identities/customers/index.yml

@@ -10,7 +10,7 @@ metadata:
    ms.subservice: ciam
    ms.workload: identity
    ms.topic: landing-page
-   ms.date: 05/10/2023
+   ms.date: 07/31/2023
    author: csmulligan
    ms.author: cmulligan
    manager: celested
@@ -29,7 +29,7 @@ landingContent:
           - text: Planning for customer identity and access management
             url: concept-planning-your-solution.md 
           - text: Feature support in customer tenants
-            url: concept-planning-your-solution.md 
+            url: concept-supported-features-customers.md 
           - text: Security and governance
             url: concept-security-customers.md
   - title: Add sign-in to your application
@@ -103,4 +103,4 @@ landingContent:
           - text: Code sample guides by app type
             url: samples-ciam-all.md?tabs=apptype
           - text: Code sample guides by language
-            url: samples-ciam-all.md?tabs=language
+            url: samples-ciam-all.md?tabs=language