Fix broken doc links for Key Vault (Azure#22772)

Author: heaths

sdk/keyvault/Azure.Security.KeyVault.Certificates/README.md

@@ -326,7 +326,7 @@ This project has adopted the [Microsoft Open Source Code of Conduct][code_of_con
 [azure_sub]: https://azure.microsoft.com/free/dotnet/
 [azure_cli]: https://docs.microsoft.com/cli/azure
 [certificate_client_class]: https://github.com/Azure/azure-sdk-for-net/blob/main/sdk/keyvault/Azure.Security.KeyVault.Certificates/src/CertificateClient.cs
-[soft_delete]: https://docs.microsoft.com/azure/key-vault/key-vault-ovw-soft-delete
+[soft_delete]: https://docs.microsoft.com/azure/key-vault/general/soft-delete-overview
 [azure_identity]: https://github.com/Azure/azure-sdk-for-net/tree/main/sdk/identity/Azure.Identity#defaultazurecredential
 [keyvault_rest]: https://docs.microsoft.com/rest/api/keyvault/
 [secrets_client_library]: https://github.com/Azure/azure-sdk-for-net/tree/main/sdk/keyvault/Azure.Security.KeyVault.Secrets

sdk/keyvault/Azure.Security.KeyVault.Keys/README.md

@@ -469,7 +469,7 @@ For more information see the [Code of Conduct FAQ][coc_faq] or contact opencode@
 [JWK]: https://tools.ietf.org/html/rfc7517
 [nuget]: https://www.nuget.org/
 [secrets_client_library]: https://github.com/Azure/azure-sdk-for-net/tree/main/sdk/keyvault/Azure.Security.KeyVault.Secrets
-[soft_delete]: https://docs.microsoft.com/azure/key-vault/key-vault-ovw-soft-delete
+[soft_delete]: https://docs.microsoft.com/azure/key-vault/general/soft-delete-overview
 [DefaultAzureCredential]: https://github.com/Azure/azure-sdk-for-net/blob/main/sdk/identity/Azure.Identity/README.md#defaultazurecredential
 [contributing]: https://github.com/Azure/azure-sdk-for-net/blob/main/sdk/keyvault/CONTRIBUTING.md
 [coc_faq]: https://opensource.microsoft.com/codeofconduct/faq/

sdk/keyvault/Azure.Security.KeyVault.Secrets/README.md

@@ -348,7 +348,7 @@ This project has adopted the [Microsoft Open Source Code of Conduct][code_of_con
 [secret_client_nuget_package]: https://www.nuget.org/packages/Azure.Security.KeyVault.Secrets/
 [secret_client_samples]: https://github.com/Azure/azure-sdk-for-net/tree/main/sdk/keyvault/Azure.Security.KeyVault.Secrets/samples
 [secret_client_src]: https://github.com/Azure/azure-sdk-for-net/tree/main/sdk/keyvault/Azure.Security.KeyVault.Secrets/src
-[soft_delete]: https://docs.microsoft.com/azure/key-vault/key-vault-ovw-soft-delete
+[soft_delete]: https://docs.microsoft.com/azure/key-vault/general/soft-delete-overview
 [DefaultAzureCredential]: https://github.com/Azure/azure-sdk-for-net/blob/main/sdk/identity/Azure.Identity/README.md#defaultazurecredential
 [contributing]: https://github.com/Azure/azure-sdk-for-net/blob/main/sdk/keyvault/CONTRIBUTING.md
 [coc_faq]: https://opensource.microsoft.com/codeofconduct/faq/

sdk/keyvault/Microsoft.Azure.KeyVault/README.md

@@ -40,7 +40,7 @@ complete Azure SDK, please see the [Microsoft Azure .NET Developer Center](https
 
 The complete Microsoft Azure SDK can be downloaded from the [Microsoft Azure Downloads Page](https://azure.microsoft.com/downloads/?sdk=net) and ships with support for building deployment packages, integrating with tooling, rich command line tooling, and more.
 
-Please review [Get started with Azure Key Vault](https://docs.microsoft.com/azure/key-vault/key-vault-get-started) if you are not familiar with Azure Key Vault.
+Please review the [overview](https://docs.microsoft.com/azure/key-vault/general/overview) if you are not familiar with Azure Key Vault.
 
 For the best development experience, developers should use the official Microsoft NuGet packages for libraries. NuGet packages are regularly updated with new functionality and hotfixes.