Update README.md (#22998)

Author: maririos

sdk/textanalytics/Azure.AI.TextAnalytics/README.md

@@ -818,7 +818,7 @@ This project has adopted the [Microsoft Open Source Code of Conduct][code_of_con
 [register_aad_app]: https://docs.microsoft.com/azure/cognitive-services/authentication#assign-a-role-to-a-service-principal
 [aad_grant_access]: https://docs.microsoft.com/azure/cognitive-services/authentication#assign-a-role-to-a-service-principal
 [custom_subdomain]: https://docs.microsoft.com/azure/cognitive-services/authentication#create-a-resource-with-a-custom-subdomain
-[DefaultAzureCredential]: https://github.com/Azure/azure-sdk-for-net/tree/main/sdk/identity/Azure.Identity/README.md
+[DefaultAzureCredential]: https://github.com/Azure/azure-sdk-for-net/blob/main/sdk/identity/Azure.Identity/README.md#defaultazurecredential
 [logging]: https://github.com/Azure/azure-sdk-for-net/blob/main/sdk/core/Azure.Core/samples/Diagnostics.md
 [data_limits]: https://docs.microsoft.com/azure/cognitive-services/text-analytics/concepts/data-limits?tabs=version-3
 [contributing]: https://github.com/Azure/azure-sdk-for-net/blob/main/CONTRIBUTING.md