[KeyVault] Update API tag for MHSM release (#10577)
[KeyVault] Update API tag for MHSM release (#10577)

* Update tag

* Update readme.md
brjohnstmsft/azure-rest-api-specs,naveedaz/azure-rest-api-specs,naveedaz/azure-rest-api-specs,AppPlatPerf/azure-rest-api-specs,solankisamir/azure-rest-api-specs,johanste/azure-rest-api-specs,vladrai/azure-rest-api-specs,brjohnstmsft/azure-rest-api-specs,yugangw-msft/azure-rest-api-specs,yugangw-msft/azure-rest-api-specs,AuxMon/azure-rest-api-specs,johanste/azure-rest-api-specs,solankisamir/azure-rest-api-specs,vladrai/azure-rest-api-specs,AppPlatPerf/azure-rest-api-specs,AsrOneSdk/azure-rest-api-specs,AsrOneSdk/azure-rest-api-specs,AuxMon/azure-rest-api-specs