customproviders t2 readme config (#13831)

Author: RAY-316

specification/customproviders/resource-manager/readme.md

@@ -52,6 +52,7 @@ swagger-to-sdk:
   - repo: azure-powershell
   - repo: azure-sdk-for-net
   - repo: azure-sdk-for-python
+  - repo: azure-sdk-for-python-track2
   - repo: azure-sdk-for-java
   - repo: azure-sdk-for-go
   - repo: azure-sdk-for-trenton