link fixes (#46017)

sdk/schemaregistry/Microsoft.Azure.Data.SchemaRegistry.ApacheAvro/README.md

@@ -186,10 +186,10 @@ This project has adopted the [Microsoft Open Source Code of Conduct][code_of_con
 [email_opencode]: mailto:[email protected]
 [schema_registry_avro_serializer]: https://github.com/Azure/azure-sdk-for-net/blob/main/sdk/schemaregistry/Microsoft.Azure.Data.SchemaRegistry.ApacheAvro/src/SchemaRegistryAvroSerializer.cs
 [employee]: https://github.com/Azure/azure-sdk-for-net/blob/main/sdk/schemaregistry/Microsoft.Azure.Data.SchemaRegistry.ApacheAvro/tests/Models/Employee.cs
-[avro_csharp_documentation]: https://avro.apache.org/docs/current/api/csharp/html/index.html
+[avro_csharp_documentation]: https://avro.apache.org/docs/++version++/api/csharp/html/index.html
 [apache_avro_library]: https://www.nuget.org/packages/Apache.Avro/
-[generic_record]: https://avro.apache.org/docs/current/api/csharp/html/classAvro_1_1Generic_1_1GenericRecord.html
-[specific_record]: https://avro.apache.org/docs/current/api/csharp/html/interfaceAvro_1_1Specific_1_1ISpecificRecord.html
+[generic_record]: https://avro.apache.org/docs/++version++/api/csharp/html/classAvro_1_1Generic_1_1GenericRecord.html
+[specific_record]: https://avro.apache.org/docs/++version++/api/csharp/html/interfaceAvro_1_1Specific_1_1ISpecificRecord.html
 [azure_sub]: https://azure.microsoft.com/free/dotnet/
 [azure_schema_registry]: https://aka.ms/schemaregistry
 [request_failed_exception]: https://docs.microsoft.com/dotnet/api/azure.requestfailedexception?view=azure-dotnet