CodeGen from PR 16853 in Azure/azure-rest-api-specs

[Hub Generated] Review request for Microsoft.RecoveryServices to add version stable/2021-10-01  (#16853)

* Updating readme.go

* Adds base for updating Microsoft.RecoveryServices from version stable/2021-08-01 to version 2021-10-01

* Updates readme

* Updates API version in new specs and examples

* Revert "Updating readme.go"

This reverts commit 4a49dbce02bebaaa8c0c62c7744b256444127a71.

* Updating readme.go

* Update specification/recoveryservicessiterecovery/resource-manager/readme.go.md

Co-authored-by: Dapeng Zhang <ufo54153@gmail.com>

Co-authored-by: Dapeng Zhang <ufo54153@gmail.com>

Author: SDKAuto