Fix output-folder (Azure#11659)

Author: ArcturusZhang

specification/attestation/resource-manager/readme.go.md

@@ -23,12 +23,12 @@ These settings apply only when `--tag=package-2018-09-01 --go` is specified on t
 Please also specify `--go-sdk-folder=<path to the root directory of your azure-sdk-for-go clone>`.
 
 ``` yaml $(tag) == 'package-2018-09-01' && $(go)
-output-folder: $(go-sdk-folder)/services/stable/$(namespace)/mgmt/2018-09-01/$(namespace)
+output-folder: $(go-sdk-folder)/services/$(namespace)/mgmt/2018-09-01/$(namespace)
 ```
 
 These settings apply only when `--tag=package-2020-10-01 --go` is specified on the command line.
 Please also specify `--go-sdk-folder=<path to the root directory of your azure-sdk-for-go clone>`.
 
 ``` yaml $(tag) == 'package-2020-10-01' && $(go)
-output-folder: $(go-sdk-folder)/services/stable/$(namespace)/mgmt/2020-10-01/$(namespace)
+output-folder: $(go-sdk-folder)/services/$(namespace)/mgmt/2020-10-01/$(namespace)
 ```