fix portal readme (Azure#15836)

Author: 00Kai0

sdk/portal/azure-mgmt-portal/README.md

@@ -11,9 +11,9 @@ For a more complete view of Azure libraries, see the [azure sdk python release](
 To learn how to use this package, see the [quickstart guide](https://aka.ms/azsdk/python/mgmt)
 
 
- 
-For docs and references, see [Python SDK References](https://docs.microsoft.com/python/api/overview/azure/portal)
-Code samples for this package can be found at [Portal Management](https://docs.microsoft.com/samples/azure-samples/azure-samples-python-management/portal) on docs.microsoft.com.
+
+For docs and references, see [Python SDK References](https://docs.microsoft.com/python/api/overview/azure/)
+Code samples for this package can be found at [Portal Management](https://docs.microsoft.com/samples/browse/?languages=python&term=Getting%20started%20-%20Managing&terms=Getting%20started%20-%20Managing) on docs.microsoft.com.
 Additional code samples for different Azure services are available at [Samples Repo](https://aka.ms/azsdk/python/mgmt/samples)