Update readme.python.md (Azure#14145)

yuzhangyi · yuzhangyi · May 28, 2021 · Apr 26, 2021 · Apr 26, 2021 · Apr 26, 2021
commit 3553058657ced69e54c846c2009c837da21de844
diff --git a/documentation/samplefiles/readme.python.md b/documentation/samplefiles/readme.python.md
@@ -9,6 +9,7 @@ license-header: MICROSOFT_MIT_NO_VERSION
 package-name: azure-mgmt-[[ServiceName]]
 no-namespace-folders: true
 package-version: 1.0.0b1
+clear-output-folder: true
 ```
 
 ``` yaml $(python-mode) == 'update' && $(track2)