Update index.yml

Author: grbury

articles/confidential-computing/index.yml

@@ -52,7 +52,7 @@ landingContent:
           - text: Azure Key Vault Managed HSM
             url: ../key-vault/managed-hsm/index.yml
           - text: Azure SQL Always Encrypted in secure enclaves
-            url: ../sql/relational-databases/security/encryption/always-encrypted-enclaves.md
+            url: https://learn.microsoft.com/sql/relational-databases/security/encryption/always-encrypted-enclaves
           - text: Azure IoT Edge
             url: ../iot-edge/deploy-confidential-applications.md
       - linkListType: whats-new