Update readme.python.md (#18619)

Author: msyyc

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

@@ -6,7 +6,7 @@ Use `--python-mode=update` if you already have a setup.py and just want to updat
 
 These settings apply only when `--track2` is specified on the command line.
 
-``` yaml $(track2)
+``` yaml $(python)
 azure-arm: true
 license-header: MICROSOFT_MIT_NO_VERSION
 package-name: azure-mgmt-rdbms
@@ -18,7 +18,7 @@ no-namespace-folders: true
 
 Generate all API versions currently shipped for this package
 
-```yaml $(track2)
+```yaml $(python)
 clear-output-folder: true
 batch:
   - tag: package-2020-10-05-privatepreview
@@ -32,4 +32,4 @@ Please also specify `--python-sdks-folder=<path to the root directory of your az
 ``` yaml $(tag) == 'package-2020-10-05-privatepreview' && $(python)
 namespace: azure.mgmt.rdbms.postgresqlhsc
 output-folder: $(python-sdks-folder)/rdbms/azure-mgmt-rdbms/azure/mgmt/rdbms/postgresqlhsc
-```
+```