Update readme.python.md (Azure#21459)

Author: Wzb123456789

specification/devcenter/resource-manager/readme.python.md

@@ -5,6 +5,7 @@ Please also specify `--python-sdks-folder=<path to the root directory of your az
 Use `--python-mode=update` if you already have a setup.py and just want to update the code itself.
 
 ``` yaml $(python)
+title: DevCenterMgmtClient
 azure-arm: true
 license-header: MICROSOFT_MIT_NO_VERSION
 namespace: azure.mgmt.devcenter